Listen to your body during workouts. If you get light headed, make sure you are consuming enough water. If you notice a significant drop in performance, make sure you are eating enough calories (especially fats and protein) during your feasting window. And if you feel severely “off,” pause your workout. Give yourself permission to EASE into intermittent fasting and fasted workouts. This is especially true if you are an endurance athlete.
Hi adrian, my height is abt 5'5ft and i weigh about 202lbs.I would like to lose my weight by working out as i live in hostel and also unable to follow diet.I used to follow my calorie tracking using Healthify app but stopped now.. Could you please recommend me to what workout i should do . I would like to lose 6-7 kgs for the first month .I am following your videos but i am confused which one to follow..I followed your 5 lbs in a week video for a couple of days and felt like burning fat and now i am seeking for your suggestion

Heard of intermittent fasting and want to try it out? Already an intermittent faster but getting bored with it? A seven-day meal plan is just what you need then! For those new to intermittent fasting, it's a way of eating that doesn't tell you what to eat but rather when to eat. So technically it's not a diet, but you still want to practice healthy eating if you want to reach your weight-loss goals. Instead of limiting calories, intermittent fasting limits the times you can eat to a specific window. There are so many different ways to intermittently fast, but the most common method is called the 16 to 8 split — fasting for 16 hours and eating for eight hours.
What if we told you that the answer to losing weight, improving body composition, and feeling better isn’t about dieting, but instead skipping meals every once in a while? For some, intermittent fasting, or going a longer period of time — usually between 14 and 36 hours — with few to no calories, can be a lot easier than you may think. And the benefits might be worth it. If you think about it, all of us “fast” every single day — we just call it sleeping. Intermittent fasting just means extending that fasting period, and being a bit more conscious of your eating schedule overall. But is it right for you? And which method is best?

Tons of celebs are jumping on the intermittent fasting keto bandwagon, and for good reason. The two work hand in hand to accelerate weight loss, not to mention stimulate lots of other performance-boosting benefits. Fasting is an extraordinary tool for improving your biology. It’s free. It’s universally accessible. It’s adaptable. It’s the reason it’s always been a major part of the Bulletproof Diet.
Cons: Even though there is flexibility in when you eat, Leangains has pretty specific guidelines for what to eat, especially in relation to when you’re working out. The strict nutrition plan and scheduling meals perfectly around workouts can make the program a bit tougher to adhere to. (You can learn more about the specifics — as well as when to time these meals — directly from Leangains here and here.)
The trial, which aimed to investigate how food deprivation affects the aging process, involved 218 normal and slightly overweight men and women between the ages of 21 and 51. Of the group, 143 of them were tasked with following CR, eating 25 percent fewer calories than usual — a decrease deemed feasible based on animal studies. They were to keep this regimen for two years with help from a behavioral intervention team and dietitians to make sure they were getting basic nutrition.
Nuts and seeds make great snacks that are high-fat and can be eaten around 2:30 p.m. Soaking these beforehand can help neutralize naturally occurring enzymes like phytates that can contribute to digestive problems. Eat dinner around 5:30 p.m., and just like the 8-to-6 window plan, a dinner with some sort of wild-caught fish or other clean protein source with vegetables is a great option.
To make “down” days easier to stick to, Johnson recommends opting for meal replacement shakes. They’re fortified with essential nutrients and you can sip them throughout the day rather than split into small meals. However, meal replacement shakes should only be used during the first two weeks of the diet — after that, you should start eating real food on “down” days. The next day, eat like normal. Rinse and repeat! (Note: If working out is part of your routine, you may find it harder to hit the gym on the lower calorie days. It may be smart to keep any workouts on these days on the tamer side, or save sweat sessions for your normal calorie days.)
This is the same as the 8-to-6 window plan, but you are extending your fasting time an extra four hours. I personally practice this plan during the workweek. I'm not a breakfast person, so I just enjoy a few cups of herbal tea to start my day. With this plan you will be eating only between the hours of 12 p.m. and 6 p.m. for a full 18 hours of fasting within a 24-hour period.
Fasts must be entered and exited with care. To enter a fast, the diet should be gradually lightened over a few days. First, heavy foods such as meats and dairy products should be eliminated for a day or two. Grains, nuts, and beans should then be reduced for several days. The day before a fast, only easily digested foods like fruits, light salads, and soups should be eaten. During the fast, only pure water and occasional herbal teas should be drunk.

Seeking God's will in special circumstances requires special time with God. Fasting to God proves acknowledgment of your personal weakness and dependence on Him. The first step to any fast is admitting your need for God. Giving up food is an outward action for an inward commitment. Ezra 8:23 says, "So we fasted and petitioned our God about this, and he answered our prayer." Fasting for God requires sacrifice and discipline.
Tuesday fasting is common in southern India as well as northwestern India. In the south, it is believed that Tuesday is dedicated to Goddess Mariamman, a form of Goddess Shakti. Devotees eat before sunrise and drink only liquids between sunrise and sunset. In the North, Tuesday is dedicated to Lord Hanuman and devotees are allowed only to consume milk and fruit between sunrise and sunset.
To make “down” days easier to stick to, Johnson recommends opting for meal replacement shakes. They’re fortified with essential nutrients and you can sip them throughout the day rather than split into small meals. However, meal replacement shakes should only be used during the first two weeks of the diet — after that, you should start eating real food on “down” days. The next day, eat like normal. Rinse and repeat! (Note: If working out is part of your routine, you may find it harder to hit the gym on the lower calorie days. It may be smart to keep any workouts on these days on the tamer side, or save sweat sessions for your normal calorie days.)

Listen to your body during workouts. If you get light headed, make sure you are consuming enough water. If you notice a significant drop in performance, make sure you are eating enough calories (especially fats and protein) during your feasting window. And if you feel severely “off,” pause your workout. Give yourself permission to EASE into intermittent fasting and fasted workouts. This is especially true if you are an endurance athlete.

DU: There are different kinds of fasting. Scientifically speaking, ‘fasting’ can be caloric restriction, intermittent fasting, or dietary restriction. Caloric restriction is simply cutting down your energy intake by 20 to 40 percent. Intermittent fasting involves forgoing food completely for a period of time, say morning till evening, and then eating normal meals the next day or so. Dietary restriction is limiting or eliminating a particular macronutrient from one’s meal, say proteins or carbohydrates, for a season.
Lacy Enderson is an Addictions and Recovery Counselor. She is Certified with the American Association of Christian Therapists and holds a Master's Degree in Biblical Counseling. She is currently enrolled in Liberty University's Master of Divinity Degree program with Chaplaincy. Lacy is a graduate of Rhema Correspondent Bible School and has completed the first section of Berean School of the Bible. Lacy is the author of, "Addiction: A Personal Story" and "So You Want to Lose Weight But You Can't Stop Eating." Her newest novel is a teenage Christian fiction titled, "Honey Sweetheart."
^ Jump up to: a b c Gassmann, Günther; Oldenburg, Mark W. (10 October 2011). Historical Dictionary of Lutheranism. Scarecrow Press. p. 229. ISBN 9780810874824. In many Lutheran churches, the Sundays during the Lenten season are called by the first word of their respective Latin Introitus (with the exception of Palm/Passion Sunday): Invocavit, Reminiscere, Oculi, Laetare, and Judica. Many Lutheran church orders of the 16th century retained the observation of the Lenten fast, and Lutherans have observed this season with a serene, earnest attitude. Special days of eucharistic communion were set aside on Maundy Thursday and Good Friday.
Seven ways to do intermittent fasting Intermittent fasting is an increasingly popular dietary choice for weight loss and health. There are many different types of intermittent fasting program, so it can be hard to find the one that is right for you. Here, we discuss the most popular types of intermittent fast, such as the 16:8 fast and the Warrior Diet. Read now

By taking our eyes off the things of this world through prayer and biblical fasting, we can focus better on Christ. Matthew 6:16-18 declares, "When you fast, do not look somber as the hypocrites do, for they disfigure their faces to show men they are fasting. I tell you the truth, they have received their reward in full. But when you fast, put oil on your head and wash your face, so that it will not be obvious to men that you are fasting, but only to your Father, who is unseen; and your Father, who sees what is done in secret, will reward you."
What makes fasting seem so novel is that, with all the diet advice out there, the easiest might be to simply not eat. Of course, fasting isn’t the same as starving yourself, which is what many people think when they hear “fasting.” And yet, fasting isn’t a diet, either. The literal definition of fasting is to abstain from food and drink from a specific period of time; it’s been around for thousands of years, as spiritual fasting is a part of many religions. But in this context, I prefer looking at fasting as simply a change in eating patterns.
Kickstarts ketosis: Usually, reaching full ketosis takes careful planning and extreme carb limiting, but intermittent fasting provides a shortcut to this fat-burning state. Once your body drains glucose — its primary source of energy —  it is forced to burn through its fat reserves for energy in a process called ketosis. Ketosis improves your blood chemistry, reduces inflammation, and helps you drop weight fast.[6] To really burn through extra fat, combine your intermittent fasting with a keto diet. Learn more here about why keto is more effective with intermittent fasting

DU: The biggest benefit of fasting is disciplining us to focus on God long enough to be changed by Him. I have seen brothers and sisters who, after spending much time in God’s presence through prayer and fasting, have been significantly empowered to carry out God’s call on their lives. From a medical perspective, there are a significant number of credible studies showing that fasting substantially reduces the risk for type 2 diabetes, heart disease, and cancer. I reviewed scientific literature on the health benefits of fasting going back up to 70 years, and what I found is that fasting improves our health span if it is done consistently and intermittently as a lifestyle.
Not only that, but growth hormone is increased during fasted states (both during sleep [5]and after a period of fasting). Combine this  increased growth hormone secretion:[6], the decrease in insulin production (and thus increase in insulin sensitivity [7]), and you’re essentially priming your body for muscle growth and fat loss with intermittent fasting.

Fat loss. Keto and intermittent fasting are a one-two punch for losing weight. Fasting and keto both spontaneously increase fat loss, even when people don’t intentionally restrict their calories.[18][19] When you pair intermittent fasting and keto together, you become a fat-burning machine. The weight comes off quickly, and because keto also suppresses ghrelin, you don’t get nearly as much of the hunger and feelings of deprivation that usually accompany weight loss.
Dr. Umesiri is an Assistant Professor at John Brown University. He is a Christian author and speaker. His latest book is Fasting for Life: Medical Proof Fasting Reduces Risk of Heart Disease, Cancer, and Diabetes. He may be reached through www.francisumesiri.com. He is married to Toyin Umesiri, a Walmart associate. They have three beautiful children.
Fasting also appears as a sign of mourning. Following Saul's death, the people of Jabesh- Gilead lamented his passing by fasting ( 1 Sam 31:13 ) as did David and his companions when they heard the news ( 2 Sam 1:12 ). David goes so far as to say that he commiserated with his enemies when they were sick, fasting and dressing himself in sackcloth ( Psalm 35:13 ). Such behavior was a sign of his mourning over them (v. 14). Zechariah describes the commemoration of Israel's tragic days of past defeat and judgment as times of mourning attended by fasting ( 7:5 ). But these days of fasting in the fourth, fifth, seventh, and tenth months will one day be turned to times of joy ( 8:19 ). Jesus speaks of the time of his departure from his disciples as a time of mourning when it will be entirely appropriate to fast ( Matt 9:14-15 ; Mark 2:18-20 ; Luke 5:33-35 ).
I asked him what happened after he stopped fasting. He laughed and said, "I am still very clear on these things, but there's also a time after I end fasting that the whole world seems more vivid and more colorful than ever before. I can distinguish tastes again. The sky seems bluer than before. The air seems crisper in the mountains. All of my senses seem to be heightened toward what is God's creation-which is always good- and what is man's invention-which very often has an element of evil to it."

Because we don't enter the fasted state until 12 hours after our last meal, it's rare that our bodies are in this fat burning state. This is one of the reasons why many people who start intermittent fasting will lose fat without changing what they eat, how much they eat, or how often they exercise. Fasting puts your body in a fat burning state that you rarely make it to during a normal eating schedule.


Catherine Gates is Senior Director of Content & Partnerships for Workmatters. She oversees the development, distribution and support of Workmatters content to equip marketplace leaders to live out their faith at work. She also builds partnerships with clients and other marketplace ministries. Catherine has a broad range of experience in technology, sales, training, public speaking and curriculum development. She’s passionate about her faith and helping people tap into more of God’s best for their lives while bringing God glory.
Wicked kings, destined for destruction, received mercy from humbling themselves and fasting (1 Kings 21:29). The entire city of Nineveh, including animals, fasted upon hearing the pronouncement of judgment from the prophet Jonah -- and God spared them (Jonah 3:10). Jesus received divine preparation for His earthly ministry while fasting and enduring temptation. Moses waited upon God forty days and received the divine revelation of God’s commandments.
Many people who want to try IF choose the 16:8 method because it allows you to eat whatever you want for an 8-hour window and then fast for 16 hours. During the fasting period, you can drink water, tea, coffee, and even diet soda. The trick is to figure out what 8-hour eating window works best for you. Are you fine with skipping breakfast? Or do you work out in the morning and prefer to forgo dinner? Experiment with the eating and fasting intervals that work best for you. However, like all restrictive diets, there are some drawbacks. For one, drinking caffeinated drinks while fasting can disrupt your circadian rhythm, and therefore, your metabolism.

A mere five years ago, skipping meals was a top diet taboo. Now it's the core of an increasingly popular (and increasingly research-backed) weight-loss approach. Intermittent fasting—periodically eating very little—is not only not bad for you, it may lower blood glucose levels and insulin resistance and reduce inflammation and cardiovascular risk. Why? How? Theories abound, but some experts believe fasting puts your cells under mild stress, just as exercise taxes your muscles and heart, ultimately strengthening them and making them more resistant to disease.
5) A new satisfaction. When you finish your fast, renewed, full of energy, detoxed, with a new desire, a new praise and a sensitivity to God’s voice, you’ll find that the absence of food was small in comparison to what you gained. When Christ’s disciples noticed that He hadn’t eaten all day and tried to get Him to slow down to eat, Christ said, “I have food to eat that you know nothing about….My food is to do the will of Him who sent me and to finish His work.”
I still don’t understand how many days in a row you have to do a fast. I guess if you are on a keto diet is is as many as you can do right. Iam new and have done 3 already. I have had some uncomfortalble side effects. but I found out it was due to lost of electrolights and I used chicken broth and more salt to make that go away. How many green veggies should I be eating in the 8 hour window? It all seems very confusing. I know lots of fat and no low fat cause of sugar.
The purpose of fasting is never explicitly stated in Scripture but its connection to penitence, mourning, and supplication suggests a self-denial that opens one to God and to the immaterial aspects of life. Inasmuch as food and drink typify life in the flesh and all its demands and satisfactions, their absence or rejection speaks to the reality of a higher dimension, one in which the things of the spirit predominate. The theology of fasting, then, is a theology of priorities in which believers are given the opportunity to express themselves in an undivided and intensive devotion to the Lord and to the concerns of the spiritual life.

What and when you eat during the feeding window also depends on when you work out. On days you exercise, carbs are more important than fat. On rest days, fat intake should be higher. Protein consumption should be fairly high every day, though it will vary based on goals, gender, age, body fat and activity levels. Regardless of your specific program, whole, unprocessed foods should make up the majority of your calorie intake. However, when there isn’t time for a meal, a protein shake or meal replacement bar is acceptable (in moderation).

^ Smith, Larry D. (September 2008). "Progressive Sanctification" (PDF). God's Revivalist and Bible Advocate. 120 (6). Principles which underlie our Wesleyan/holiness heritage include such commitments as unquestioned scriptural authority; classical orthodox theology; identity with the one holy and apostolic church; warmhearted evangelical experience; love perfected in sanctifying grace; careful, disciplined living; structured spiritual formation, fidelity to the means of grace; and responsible witness both in public and in private—all of which converge in holiness of heart and life, which for us Methodists will always be the “central idea of Christianity.” These are bedrock essentials, and without them we shall have no heritage at all. Though we may neglect them, these principles never change. But our prudentials often do. Granted, some of these are so basic to our DNA that to give them up would be to alter the character of our movement. John Wesley, for example, believed that the prudentials of early Methodism were so necessary to guard its principles that to lose the first would be also to lose the second. His immediate followers should have listened to his caution, as should we. For throughout our history, foolish men have often imperiled our treasure by their brutal assault against the walls which our founders raised to contain them. Having said this, we must add that we have had many other prudentials less significant to our common life which have come and gone throughout our history. For instance, weekly class meetings, quarterly love feasts, and Friday fast days were once practiced universally among us, as was the appointment of circuit-riding ministers assisted by “exhorters” and “local preachers.”


Jesus was teaching that after His departure, the entire dynamic would change and the disciples would need a different type of preparation and provision. Fasting was to be a vital part of this new preparation. The new covenant is based on the truth that we have received everything in Christ, “Praise be to the God and Father of our Lord Jesus Christ, who has blessed us in the heavenly realms with every spiritual blessing in Christ” (Ephesians 1:3).
^ Jump up to: a b Hatch, Jane M. (1978). The American Book of Days. Wilson. p. 163. ISBN 9780824205935. Special religious services are held on Ash Wednesday by the Church of England, and in the United States by Episcopal, Lutheran, and some other Protestant churches. The Episcopal Church prescribes no rules concerning fasting on Ash Wednesday, which is carried out according to members' personal wishes; however, it recommends a measure of fasting and abstinence as a suitable means of marking the day with proper devotion. Among Lutherans as well, there are no set rules for fasting, although some local congregations may advocate this form of penitence in varying degrees.
Fasting has been found to have positive effects on body mass as well as other health markers in professional athletes. This is because, as previously mentioned, fasting can effectively shed excess fat, while optimizing muscle growth, because of HGH production. Traditionally, athletes are advised to consume high-quality protein half hour after finishing their workouts (post-workout nutrition) to simultaneously build muscle and reduce fat. Fasting is advised for training days, while eating is encouraged on game days.
Physiologically, calorie restriction has been shown in animals to increase lifespan and improve tolerance to various metabolic stresses in the body. [4] Although the evidence for caloric restriction in animal studies is strong, there is less convincing evidence in human studies. Proponents of the diet believe that the stress of intermittent fasting causes an immune response that repairs cells and produces positive metabolic changes (reduction in triglycerides, LDL cholesterol, blood pressure, weight, fat mass, blood glucose). [3,5] An understandable concern of this diet is that followers will overeat on non-fasting days to compensate for calories lost during fasting. However, studies have not shown this to be true when compared with other weight loss methods. [5]
The Fast Diet is only an eating pattern, but that doesn't mean you shouldn't exercise. In fact, being physically active lowers your risk of heart disease and diabetes, helps keep weight off and increases your energy level. Most experts suggest getting at least 30 minutes of moderate-intensity exercise – like brisk walking – most or all days of the week.
Kickstarts ketosis: Usually, reaching full ketosis takes careful planning and extreme carb limiting, but intermittent fasting provides a shortcut to this fat-burning state. Once your body drains glucose — its primary source of energy —  it is forced to burn through its fat reserves for energy in a process called ketosis. Ketosis improves your blood chemistry, reduces inflammation, and helps you drop weight fast.[6] To really burn through extra fat, combine your intermittent fasting with a keto diet. Learn more here about why keto is more effective with intermittent fasting
The trial, which aimed to investigate how food deprivation affects the aging process, involved 218 normal and slightly overweight men and women between the ages of 21 and 51. Of the group, 143 of them were tasked with following CR, eating 25 percent fewer calories than usual — a decrease deemed feasible based on animal studies. They were to keep this regimen for two years with help from a behavioral intervention team and dietitians to make sure they were getting basic nutrition.

Another study, this one out of the University of Southern California, discovered that when 71 adults were placed on a five-day fast (eating between 750 and 1,100 calories a day) once every three months, they lost an average of 6 pounds, reduced inflammation levels and their waistlines and lost total body fat without sacrificing muscle mass. (2) If you want to lose weight and lose belly fat, fasting even irregularly could be the key.
Thanks for your honesty and for sharing why you feel that this attempt was not successful. Why don’t you start the 4 week challenge over again? You see learning how to get the best results does not mean giving up just because on your first attempt it did not work. The biggest battle to losing weight and improving you health is about changing years of habits (both conscious habits and the unconscious habits). That is why your mindset and your commitment to want to lose weight is so important. You must know why you are wanting to lose the weight. What is the real motivation? Is it enough to keep your committed and following through? Also look at the trigger points that caused you to ‘falter’ give up, cave in, quit. This will tell you alot. Perhaps you might be interested in some extra resources. Send me an email if you would like some further help [email protected]
Nuts and seeds make great snacks that are high-fat and can be eaten around 2:30 p.m. Soaking these beforehand can help neutralize naturally occurring enzymes like phytates that can contribute to digestive problems. Eat dinner around 5:30 p.m., and just like the 8-to-6 window plan, a dinner with some sort of wild-caught fish or other clean protein source with vegetables is a great option.
People can live days with no food and water, and weeks or several months consuming only water. In lab animals, when calorie intake is cut by more than 50 percent, they eventually die of complications from starvation. In the final stages of starvation, the body, depleted of glucose and fatty acids, turns to muscle protein for energy. Humans die when their body mass index (BMI) is around 12.

Eve listened to what the devil had to say to her about the benefits of eating what God had prohibited. The devil always points out the would-be and usually short-term benefits of sin. Many substances that are ultimately harmful for us taste good or feel good or bring pleasure. In some cases, the partaking of the substance makes us feel like adults, feel accepted by others, or feel more powerful and in greater control. Some people say about certain foods and substances that they "give me quick energy," "make me more alert," or "help me relax."
Research7,8,9 has shown that intermittent fasting results in many of the same benefits as calorie restriction — even if you don't place any restrictions on the number of calories you consume when you do eat. This was demonstrated in a 2013 review,10 which found a broad range of therapeutic benefits of intermittent fasting, even when total calorie intake per day did not change, or was only slightly reduced. Research included in that review, and other published studies, indicate that intermittent fasting can help:
I’ll share some of my experiences, now doing heavy strength training for 3 years in a fasted state: For my first “fasted” workout or two after starting an IF protocol, it was very weird to not eat before training. However, after a few sessions, I learned that my body could certainly function (and even thrive) during my training sessions despite not eating a pre-workout meal.
4) A sensitivity to God’s voice. The New Testament prophetess Anna is praised in the book of Luke for being a devoted servant to God and His temple. Because she regularly fasted and prayed, she was able to hear the voice of God speak clearly to her the day that Baby Jesus was brought into her temple to be dedicated. She knew He was the Christ and told everyone who would listen about His arrival. When we detox the spirit and become consumed with desire and praise for God, we become sensitive to His voice. Like Anna, when God speaks to us in the midst of chaos, we’ll still be able to pick out His voice and know what He wants us to do because we have trained our ear to hear Him through fasting, prayer, study and praise.

Fasting also helps us learn the lessons of the Day of Atonement : forgiveness, reconciliation to God and the need to resist Satan and pray for the time of his removal (Revelation 20:1-3 Revelation 20:1-3 1 And I saw an angel come down from heaven, having the key of the bottomless pit and a great chain in his hand. 2 And he laid hold on the dragon, that old serpent, which is the Devil, and Satan, and bound him a thousand years, 3 And cast him into the bottomless pit, and shut him up, and set a seal on him, that he should deceive the nations no more, till the thousand years should be fulfilled: and after that he must be loosed a little season.
For the uninitiated, intermittent fasting is an eating pattern or a diet regimen that cycles between brief periods of fasting (with either no food or significant calorie reduction) and non-fasting over a defined period. There are different types of intermittent fasting such as the 16/8 method, the 5:2 diet, eat-stop-eat -- all of which involve vary in the number of fast days and calorie portions. But if you’re a newbie faster and trying to lose weight or do away with that unhealthy visceral fat using the intermittent fasting, most of them can seem too extreme for you. But fret not, here’s one that’s considered best for beginners - the 12:12 method. Let’s try to figure out what exactly is the 12:12 fasting and how does it help with weight loss. Read - Spinach juice benefits for weight loss: How to lose belly fat in 1 week by adding spinach (palak) to your diet

Thanks for bringing this to our attention, I believe Muslims are urged to fast entirely, whereas the fasting diet plan or 5:2 diet allows people to eat and drink a small amount of food throughout the day. Having said this if this is something you have been doing your entire life perhaps you have some great tips you can share that makes fasting easier?

Through evolution, the body became very efficient at storing energy and handling situations when no food was available. For many centuries, fasting was probably a normal occurrence for most people, and the body adapted to it. It is estimated that even very thin people can survive for 40 days or more without food. The body has a special mechanism that is initiated when no food is eaten. Fasting is not starvation, but rather the body's burning of stored energy. Starvation occurs when the body no longer has any stored energy and begins using essential tissues such as organs for an energy source. Therapeutic fasts are stopped long before this happens.


But here’s something important to note about what we know from science about fasting: Though a lot of the popular interest is in weight loss, many of the key researchers who study fasting aren’t focusing on that at all. In fact, many of the studies on fasting come from institutes of aging, like this one, and the researchers behind the studies actually focus on longevity and disease prevention.
So what accounts for this heightened mental state? It seems fasting triggers a dramatic switch in the body’s metabolism, according to a paper Mattson and colleagues published in February in the experimental biology journal FASEB. In humans, fasting for 12 hours or more drops the levels of glycogen, a form of cellular glucose. Like changing to a backup gas tank, the body switches from glucose to fatty acids, a more efficient fuel. The switch generates the production of ketones, which are energy molecules that are made in the liver. “When the fats are mobilized and used to produce ketones, we think that is a key factor in accruing the health benefits,” says Mattson.
Methods of fasting also vary widely and cover a broad spectrum. If followed strictly, the person fasting does not partake any food or water from the previous day's sunset until 48 minutes after the following day's sunrise. Fasting can also mean limiting oneself to one meal during the day, abstaining from eating certain food types or eating only certain food types. In any case, the fasting person is not supposed to eat or even touch any animal products (i.e., meat, eggs) except dairy products. Amongst Hindus during fasting, starchy items such as Potatoes, Sago and Sweet potatoes are allowed. The other allowed food items include milk products, peanuts and fruits. It should be noted that peanuts and the starchy items mentioned above originate outside India.
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