Fasting should not be considered a "dieting method" either. We shouldn't fast to lose weight, but rather to gain deeper fellowship with God. Yes, anyone can fast. Some may not be able to fast from food (diabetics, for example), but everyone can temporarily give up something in order to focus on God. Even unplugging the television for a period of time can be an effective fast.
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Time-restricted eating is pretty simple to implement. If you finish dinner at 7 p.m., for instance, you wouldn’t eat anything again until at least 7 a.m. If you wanted to take it further, you’d extend the no-eating time until about 11 a.m. or 12 p.m. Because you’re sleeping for a large chunk of the “no eating” time, this is a good way to introduce fasting into your lifestyle and experiment without any major changes.
The Bible also gives instructions about the attitude and approach we should have in fasting. Jesus warned about hypocritical fasting, trying to show off or make others feel sorry for us (Matthew 6:16-17). Instead we should not “appear to men to be fasting, but to your Father who is in the secret place” (verse 18). Isaiah also contrasts selfish fasting with godly fasting marked by care and concern for others (Isaiah 58:3-10).
The struggle is real at times to not to eat especially since food is so much a part of my life. In the moments were I am craving a pizza or chips is when I have to pray and listen to gospel music. Then I begin praise and worship and the Lord strengthens me and revitalizes me. It will not be easy these 21 days but when you are totally dependent on God He will definitely bring you through.
That’s the principle behind the diet method known as intermittent fasting. Unlike many popular diets, intermittent fasting has the backing of scientific research (including a massive 2017 study analysis by the International Society of Sports Nutrition), which suggests that intermittent fasting is just as effective as daily calorie restriction—sometimes better—at improving body composition. Furthermore, intermittent fasting doesn’t involve any calorie counting, and may suppress hunger better than traditional low-calorie diets.
Fasting has been used therapeutically since at least the 5th century bce, when Greek physician Hippocrates recommended abstinence from food or drink for patients who exhibited certain symptoms of illness. Some physicians recognized a fasting instinct, whereby patients in certain disease states naturally experience a loss of appetite. Some physicians believed that administering food during such states was unnecessary and possibly even detrimental, since fasting was thought to be an important natural part of the recovery process.
In a randomized trial of 107 overweight or obese premenopausal women, researchers found that participants who followed an intermittent food energy restriction plan (25 percent restriction two days a week) lost a comparable amount of weight to the participants who followed a continuous energy restriction plan. After six months, participants following the intermittent calorie restriction plan lost an average of 14 pounds each. Results were published in 2011 in the International Journal of Obesity.
Be aware it may be easier to stick to than other types of fasting diets, but the weight loss will be smaller. Other options include alternate day fasting, which calls for eating 500 calories or so one day, then eating whatever you’d like the next; and the 5:2 Plan, which involves eating normally five days a week, then consuming fewer than 600 calories two non-consecutive days a week.
MONDAY: Fast Day // On fast days I only drink coffee, tea, non-caloric drinks and water (flavored sparkling water like La Croix has been awesome during fasting, my favorite is the Peach-Pear flavor). I add a little half & half in my coffee, and those are the only calories I consume on fast days. If/when I feel hunger pains on fast days, I drink a bottle/can of sparkling water and that helps me get through the day.
In some specific periods of time (like Caturmasya or Ekadashi fasting) it is said that one who fasts on these days and properly doing spiritual practice on these days like associating with devotees -sangha, chanting holy names of Hari (Vishnu, Narayana, Rama, Krishna) and similar (shravanam, kirtanam vishno) may be delivered from sins.
The physiology of fasting has been widely studied and documented by medical science. Beneficial effects such as lowered cholesterol and improved general functioning have been shown. Fasting as a treatment for illness and disease has been studied less, although some studies around the world have shown beneficial results. A 1984 study showed that workers in Taiwan who had severe chemical poisoning had dramatic improvement after a ten-day fast. In Russia and Japan, studies have demonstrated fasting to be an effective treatment for mental illness. Fasting has been featured on the cover of medical journals, although mainstream medicine has generally ignored fasting and detoxification treatments as valid medical procedures.
Physiologically, calorie restriction has been shown in animals to increase lifespan and improve tolerance to various metabolic stresses in the body.  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. 
As long as you are in a calorie deficit then meal timing is irrelevant. In some cases large late night meals have been shown to preserve muscle mass better on a diet and result in a greater loss in body fat percentage. I highly recommend reading Martin Berkhan’s article on the subject – Is Late Night Eating Better for Fat loss and Health. Check out this post for more on the differences between the Kinobody approach and LeanGains (Martin Berkhan’s approach).
Although certain benefits of caloric restriction have been demonstrated in animal studies, similar benefits of intermittent fasting in humans have not been observed. It is unclear that intermittent fasting is superior to other weight loss methods in regards to amount of weight loss, biological changes, compliance rates, and decreased appetite. Certain people who typically eat one or two meals a day or do not eat for long stretches of time may show better compliance with this type of regimen.
Yes, it's a good idea for believers to fast from time to time. Fasting is not required in Scripture, but it's highly recommended. The primary Biblical reason to fast is to develop a closer walk with God. By taking our eyes off the things of this world, we can focus better on Christ. "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" (Matthew 6:16-18).
Mosley tried this "intermittent fasting" diet when his doctor showed him that though he was only a few pounds overweight, his cholesterol was high and his blood sugar was headed in the wrong direction. He writes that he knew fasting would be difficult, but his hunger pangs passed quicker than he expected. He also felt that fasting sharpened his senses and his brain. Plus, the diet delivered all the results he hoped for.
Alternative medicine A period of voluntary abstinence from foods and/or drinks; fasting is integral to many religions, as it is believed to purify the mind and spirit; fasting rests the GI tract, and may rid the body of toxins and undigested metabolites; fasting leads to a loss of water, Na+, and K+, resulting in postural hypotension, and decreased blood sugar resulting in depression, fatigue, decreased libido, and malaise, increased nitrogen in the circulation due to protein breakdown, and may result in premature childbirth—Yom Kippur effect
Forms of intermittent fasting exist in religious practices in various groups across the world. Religious fasting regimens include, but are not limited to, Vrata in Hinduism, Ramadan fasting (Islam), Yom Kippur fasting (Judaism), Orthodox Christian fasting, Fast Sunday (The Church of Jesus Christ of Latter-day Saints), and Buddhist fasting. Certain religious fasting practices, like Buddhist fasting, only require abstinence from certain foods, while others, like the Jewish fast on Yom Kippur, last for a short period of time and would cause negligible effects on the body. Islam is the only major religion that engages in a fasting practice reflective of intermittent fasting in terms of both food consumption and diet consistency. The duration of the Ramadan fast is between 28 and 30 days, depending on the year, and consists of not eating or drinking from sunrise until sunset. During the holiday, Muslims eat twice per day: once in the morning before dawn and once in the evening after dusk. A meta-analysis on the health of Muslims during Ramadan shows significant weight loss during the fasting period of up to 1.51 kilograms (3.3 lb), but this weight was regained within about two weeks of Ramadan ending. The analysis concluded that "Ramadan provides an opportunity to lose weight, but structured and consistent lifestyle modifications are necessary to achieve lasting weight loss." Negative effects of Ramadan fasting include increased risk of hypoglycemia in diabetics as well as inadequate levels of certain nutrients.
"If you’ve never fasted before, be aware that in the early stages you may get dizzy and have headaches. This is part of the body’s cleansing process and will pass with time. Be sure that you break the fast gradually with fresh fruit and vegetables. Do not overeat after the fast. Chili and pizza may sound good after several days of not eating, but please, exercise a little restraint and say no!” – What Christians Need to Know about Fasting by Sam Storms
This is probably a good time to mention that while I have practiced intermittent fasting consistently for the last year, I'm not fanatical about my diet. I work on building healthy habits that guide my behavior 90% of the time, so that I can do whatever I feel like during the other 10%. If I come over to your house to watch the football game and we order pizza at 11pm, guess what? I don't care that it's outside my feeding period, I'm eating it.
Peipert was 48, stood at 5 feet, 5 inches, and weighed 174 pounds. During the trial, he cut his daily food intake from 3,300 to 2,475 calories, and his weight dropped to 147 pounds. His health biomarkers, especially his blood pressure, were excellent. “It was a remarkable drop in blood pressure. That taught me that, for our health, if we were just a little thinner, we’d be better off,” says Peipert, a gynecologist and researcher at the Indiana University School of Medicine.
Before beginning your fast, decide when you’re eating and what you’ll be eating then. Knowing this in advance takes the pressure off, especially if you feel like you may eat everything in sight “because you can.” As you become more used to fasting, you might find it’s unnecessary to sort out meals beforehand, but I find having a range of healthy food waiting for me in the fridge makes fasting a lot easier.
The purpose in fasting for God is not about giving up food; it is about removing the obstacles that get in the way of fully focusing on Him. Human beings are conditioned to eat, usually 3 meals a day and snacks. We are so focused on what we are going to eat next, we leave very little room in our minds for thinking about God. Removing the food will free up your mind so you can meditate on God.
Fasting is important, more important perhaps, than many of us have supposed . . . when exercised with a pure heart and a right motive, fasting may provide us with a key to unlock doors where other keys have failed; a window opening up new horizons in the unseen world; a spiritual weapon of God’s provision, mighty, to the pulling down of strongholds. [Arthur Wallis, God’s Chosen Fast].
^ Pfatteicher, Philip H. (1990). Commentary on the Lutheran Book of Worship: Lutheran Liturgy in Its Ecumenical Context. Augsburg Fortress Publishers. pp. 223–244, 260. ISBN 9780800603922. The Good Friday fast became the principal fast in the calendar, and even after the Reformation in Germany many Lutherans who observed no other fast scrupulously kept Good Friday with strict fasting.
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.
Secular Music Fast: Instead of listening to Top Hits on the radio, you can choose to listen to the Christian radio station for a period of time. Pop in a CD of your favorite worship leader when you're driving to work. Listen to a Christian podcast or audiobook. You can even turn the stereo off completely and spend that time in prayer. You'll be amazed what this little change will do for your life.
Drink Bulletproof Coffee: Skipping breakfast isn’t easy for everyone. If an 18-hour fast sounds daunting, never fear: there’s a hack for that. Instead of skipping breakfast, you replace it with a cup of fatty, satisfying Bulletproof Coffee. This simple hack keeps you in a fasted state and keeps the “hangries” away, while nourishing your body with good fats. Learn more here about boosting your intermittent fasting results with Bulletproof Coffee
That’s what happened to me. I was in ketosis for a year, lost 125lbs, but then I started eating again and poof, back came 90 of the 125 pounds 🙁 I’m finding it more difficult to get back into the swing of eating under 20 carbs a day. I find myself starving, or carb starved as it’s called, and it’s proving to be difficult, even with the meal replacement drinks. I’m going to try this fasting and see if that will help me get back to skinny, but be able to keep it off.
Confront injustice through fasting. Fast as a way of expressing poverty in your body, to show solidarity with those who are impoverished by injustice in our fallen world. Divest yourself of some resources – food – for the good of others. Convert what you give up in food when you fast into gifts for the poor by estimating the cost of the food you would have eaten if you hadn’t fasted and giving that amount to charities that help poor people. Use the time you would have spent eating to serve people in need and help bring more justice to the world. Use your fasting to call attention to other people’s needs, such as when you’re working to find solutions to the problems causing injustice and want to inspire others (like government leaders) to take action as well. However, be sure not to call attention to yourself, simply to try to impress others with your fasting. Use fasting to confront injustices in our own attitudes and behaviors, as well – to break the hold of unhealthy habits in your life and help you grow in holiness. Ask God to give you a clear vision of what He would like your life to look like. Then, through fasting, express your complete surrender to that vision.
An informative description of the proclamation of a fast is in Jeremiah 36:9. There the people of Judah convened, apparently for the purpose of national repentance. This at least is what Jeremiah instructed Baruch to encourage them to do (vv. 7-8). Moreover, Jeremiah refers to the anticipated event as a "day of fasting" (v. 6), suggesting a common practice known to him and the people generally. In fact, Isaiah had spoken of such convocations a century earlier ( 58:3-6 ), gatherings on special days for special purposes. Regardless of Isaiah's feelings about the abuse of fasting, it is obvious that he recognized it as a legitimate form of worship and that he found no fault with it being carried out on specially called occasions.
For those looking into getting into these fad diets. They all work, to an extent. The “best” diet is most certainly the one that you can most adhere to. That being said, so long as you are in a caloric deficit, you will lose weight! Face it, what is the point when you diet down and can not keep the weight off? You will most certainly rebound and end up right where you started. Consult with your doctor first and foremost for health and welfare issues and follow-up with a professional. Your health is of utmost importance. Take care everyone.
Generally, you can exercise while fasting. You might even find that on time-restricted eating, you feel more energetic in the mornings to get your workout in. On more restrictive fasts, however, your low-calorie days might leave you feeling too sluggish. If that’s the case, you might consider squeezing in a gentle yoga session or going for a walk. As usual, check in with yourself. You can always scale back or up depending on how you’re feeling.
Dr. Michael Mosley popularized this variation of intermittent fasting in his book ‘The Fast Diet’. This involves 5 regular eating days and 2 fasting days. However, on these two fasting days, it is permitted to eat 500 calories on each day. These calories can be consumed at any time during the day – either spread throughout the day, or as a single meal.
Fasts may last for varying lengths of time -- one day, three days, seven days, and more. We should prayerfully seek the Lord about the length of our fast. Fasting should have an object in mind; we should have a clear idea of the need and purpose. One of the most pressing reasons for Christian fasting may be revival -- “Will you not revive us again...” (Psalm 85:6).
Fasting is obligatory for every Muslim one month in the year, during Ramadhan. Each day, the fast begins at sun-rise and ends at sunset. During this time Muslims are asked to remember those who are less fortunate than themselves as well as bringing them closer to God. This also helps to give the digestive system a break. Non obligatory fasts are two days a week as well as the middle of the month, as recommended by the Prophet Muhammad.
If the better part of wisdom for you, in your health condition, is not to go without food, consider fasting from television, computer, social media, or some other regular enjoyment that would bend your heart toward greater enjoyment of Jesus. Paul even talks about married couples fasting from sex “for a limited time, that you may devote yourselves to prayer” (1 Corinthians 7:5).
If you have spent any time looking for a diet program on the internet, you know exactly what I am talking about. Every few years there’s some new miracle health secret being discussed or marketed all over social media sites like Facebook and Reddit. These fads even infiltrate top-level health forums and have fitness “gurus” swearing they are the answer to your prayers.
“Cycles of fasting can reset and rejuvenate the human body,” said Valter Longo, director of the Longevity Institute at the University of Southern California. Periods with no food, he said, help the body eliminate and replace damaged cells with new ones through a process called autophagy (the study of which recently garnered a Nobel Prize). (Longo is a leading fasting researcher but he’s pretty dug in — with a book about fasting, and a company that sells fasting products. He says he donates all the proceeds from the company and the book to health charities.)
You also want to avoid the counting calories and calorie restriction fallacies. Most people fail to appreciate that there are many intricate biochemical dynamics that occur that are unaccounted for when you just count "calories in and calories out." While animals like rats can achieve a 40 percent increase in longevity through lifelong calorie restriction, such a great effect is not seen in humans, and there are good reasons for that. As pointed out by Fight Aging:14
Study after study confirms that any form of intermittent fasting will help reduce weight and improve body composition, though the results are probably about the same as you’d see from restricting your calories. One study Varady ran, published in 2017 in JAMA Internal Medicine, found that after dieting for one year, people lost about 5–6% of their bodyweight whether they restricted their calories or tried alternate-day fasting.