So what’s the first step in getting started? Each method has its own guidelines for how long to fast and what to eat during the “feeding” phase. Below, you’ll find the five most popular methods and the basics of how they work. Keep in mind, intermittent fasting isn’t for everyone. Those with health conditions of any kind should check with their doctor before changing up their usual routine. Note that personal goals and lifestyle are key factors to consider when choosing a fasting method.
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).
Whole-day fasting involves regular one-day fasts. The strictest form would be alternate day fasting (ADF). This involves a 24-hour fast followed by a 24-hour non-fasting period. The alternate day modified fasting (ADMF) and 5:2 diets—the latter defined as five days per week not fasting and two days per week either total fasting or modified fasting—both allow the consumption of approximately 500–600 calories on fasting days.[1][3]
Hoddy suggests trying a plan for two weeks and keeping a record of how you feel and what you eat. You can switch to another one if it's making you grumpy, or you can modify it; when Hoddy fasted, she split one meal into two smaller ones on fast days so she could have dinner with her husband. Or follow a plan partway, says Peterson. "Any form of fasting helps burn fat, and extending your overnight fast a little—say, eating dinner earlier—is an overall health benefit."

^ Stravinskas, Peter M. J.; Shaw, Russell B. (1 September 1998). Our Sunday Visitor's Catholic Encyclopedia. Our Sunday Visitor. ISBN 9780879736699. The so-called black fast refers to a day or days of penance on which only one meal is allowed, and that in the evening. The prescription of this type of fast not only forbids the partaking of meats but also of all dairy products, such as eggs, butter, cheese and milk. Wine and other alcoholic beverages are forbidden as well. In short, only bread, water and vegetables form part of the diet for one following such a fast.


How It Works: Fast for 14 (women) to 16 (men) hours each day, and then “feed” for the remaining eight to 10 hours. During the fasting period, you consume no calories. However, black coffee, calorie-free sweeteners, diet soda and sugar-free gum are permitted. (A splash of milk in your coffee won’t hurt, either.) Most practitioners will find it easiest to fast through the night and into the morning. They usually break the fast roughly six hours after waking up. This schedule is adaptable to any person’s lifestyle, but maintaining a consistent feeding window time is important. Otherwise, hormones in the body can get thrown out of whack and make sticking to the program harder, Berkhan says.
A fast for God doesn't have to be all day. It can be one meal. You could choose to give up sugar or caffeine. Fasting for God is sacrificing something that is important to you. Surrendering to God means giving of yourself for Him. We cry out, "All of you, none of me." Fasting tears down strongholds, fasting causes divine power to loose the chains of injustice and sets the captive free. A fast for God ushers in every ministering spirit to go forth on your behalf bringing solutions to every problem. If you want to see God's power working in your life, then fast.

Another perk? There are no “forbidden foods,” and no counting calories, weighing food or restricting your diet, which makes it a bit easier to follow. That said, this isn’t a free-for-all. “You still have to eat like a grown-up,” Pilon says. It’s all about moderation: You can still eat whatever you want, but maybe not as much of it. (A slice of birthday cake is OK, he says, but the whole cake isn’t.)

Embarking on an intermittent fasting diet can feel daunting. After all, depriving yourself of food willingly doesn’t sound like a barrel of fun. An easier way to get started is with the Bulletproof Diet, a 16:8 style fast, where you eat nothing after dinner until lunchtime the next day.  Yes, you skip a normal breakfast, but instead of running on empty, you drink a Bulletproof Coffee instead. The healthy fats from the grass-fed butter and Brain Octane Oil, coupled with the kick of caffeine, give you energy and keep you full without switching on your digestion. Because there are no sugars, carbs, or protein, you remain in the fasting state but you’re able to power through your morning and get stuff done. Learn more here on how to boost your intermittent fasting results. 
You’ll eat lunch and dinner within a six-hour window, which gives you an 18-hour fast. Most people will have no problem intermittent fasting every day. Some women may need to do intermittent fasting every other day or a couple of times a week and build up from there. You can learn more about intermittent fasting and women here. The key is to experiment to see what works for you.
A randomized controlled trial that followed 100 obese individuals for one year did not find intermittent fasting to be more effective than daily calorie restriction. [6] For the 6-month weight loss phase, subjects were either placed on an alternating day fast (alternating days of one meal of 25% of baseline calories versus 125% of baseline calories divided over three meals) or daily calorie restriction (75% of baseline calories divided over three meals) following the American Heart Association guidelines. After 6 months, calorie levels were increased by 25% in both groups with a goal of weight maintenance. Participant characteristics of the groups were similar; mostly women and generally healthy. The trial examined weight changes, compliance rates, and cardiovascular risk factors. Their findings when comparing the two groups:

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.)


It’s a good idea to weigh yourself before starting (and then again at the same time each week), and also to take chest, waist and hip measurements. The rate that you’ll lose depends on your age, levels of activity and your own body – so don’t be disheartened if you’re losing a pound a week while others are losing five or more. Typically weight loss will be faster at the beginning of the diet, and for those with a lot of weight to lose to reach a healthy weight (see this calculator to find out what a healthy weight - or BMI - is for someone of your height and weight).

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).
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.
The combination of fasting and praying is not a fad or a novelty approach to spiritual discipline. Fasting and praying are not part of a human-engineered method or plan. They are not the means to manipulate a situation or to create a circumstance. Fasting and praying are Bible-based disciplines that are appropriate for all believers of all ages throughout all centuries in all parts of the world.

Hello Adrian, my name is Rita. I am 61 years old and just retired from 30 years of teaching! The last 12 years I taught 3rd grade! I have gained weight and become very depressed! I am 5'4" and weigh 208 pounds! Terribly obese! I have just been diagnosed with sleep apnea, and I take blood pressure meds! (And antidepressants) Please help! I use to be energetic and a lot of fun! I would love for my husband of 37 years to find me desirable again! Please tell me how I should start to see quick results! I would like to weigh 135 pounds, which is 73 pounds to lose! Is this possible? I am desperate!😧 but lack motivation! After reading your articles, I am ready to try! Thanks for hearing me out! Your guidance on how I should begin will be greatly appreciated! With gratitude, Rita from Mississippi!
Christian fasting isn't some kind of a "work" that's commanded by Christ or required by Scripture. However, that doesn't mean that fasting isn't recommended as a part of our spiritual growth. The Book of Acts records believers fasting before they made important decisions (Acts 13:4; 14:23). Fasting and prayer are often linked together (Luke 2:37; 5:33). Too often, the focus of fasting is on the lack of food. However, the purpose of fasting is to take our eyes off the things of this world and instead focus on God. Fasting is a way to demonstrate to God and to ourselves that we are serious about our relationship with Him. Although fasting in Scripture is almost always a fasting from food, there are other ways to fast. Anything you can temporarily give up in order to better focus on God can be considered a fast (1 Corinthians 7:1-5). Fasting should be limited to a set time, especially when the fasting is from food. Extended periods of time without eating are harmful to the body. Fasting is not intended to punish our flesh, but to focus on God.
Studies show that intermittent fasting accelerates weight loss. In a 2015 review pooling 40 different studies, participants shed on average 10 pounds in a 10-week period.[1] Another study found that obese adults following an “alternate day” intermittent fasting schedule (eating 25 percent of their daily calories on one day, and eating normally the following day) lost up to 13 pounds over 8 weeks.[2]

Weight-loss resistance can often be due to an underlying hormone imbalance. Leptin resistance occurs when your brain stops recognizing leptin's signals to use your body’s fat stores for energy. This causes your body to continually store fat instead of using it. Intermittent fasting has been shown to improve chronic inflammation that can dull the brain’s leptin receptor sites.
Fast from Going Out: Take a look at your calendar and pick a night when you'd usually go out and spend the time instead diving into Scripture. Maybe there's a book of the Bible you've always wanted to read but didn't have time. Perhaps you want to pray through the Psalms. Is there a person in the Bible you'd like to know more about? Give this time to God and let Him show you the great treasures of His Word!

Embarking on an intermittent fasting diet can feel daunting. After all, depriving yourself of food willingly doesn’t sound like a barrel of fun. An easier way to get started is with the Bulletproof Diet, a 16:8 style fast, where you eat nothing after dinner until lunchtime the next day.  Yes, you skip a normal breakfast, but instead of running on empty, you drink a Bulletproof Coffee instead. The healthy fats from the grass-fed butter and Brain Octane Oil, coupled with the kick of caffeine, give you energy and keep you full without switching on your digestion. Because there are no sugars, carbs, or protein, you remain in the fasting state but you’re able to power through your morning and get stuff done. Learn more here on how to boost your intermittent fasting results. 

Fasting is not a way to be forgiven of your sins, but rather a way to grow closer to God after he has already forgiven your sins. For your sins to be forgiven, cry out to God and ask him for forgiveness. Jesus (God) took the punishment for your sins - past present and future. Ask God to forgive you because of Jesus' sacrifice on the cross and realize you cannot save yourself by fasting or any other way. Only God can save you. Salvation is mercy. It is a free, undeserved gift of grace and love. Meditate on that and on the Bible. Read the book of John.
        Fasting is to be done with the object of seeking to know God in a deeper experience (Isaiah 58:1; Zechariah 7:5). Fasting relates to a time of confession (Psalms 69:10). Fasting can be a time of seeking a deeper prayer experience and drawing near to God in prevailing prayer (Ezra 8:23; Joel 2:12). The early church often fasted in seeking God's will for leadership in the local church (Acts 13:2). When the early church wanted to know the mind of God, there was a time of prayer and fasting.
The other factors to consider with this diet are more concerned with your current weight. Lower calorie intake for most people will equal less fat. This is because, unless you’re a full-time athlete, most people do not need the number of calories they consume each day. They don’t burn that energy away, and as a result, it turns into fat. The 5:2 diet promotes lower calories on a weekly basis and high nutrient foods during the fasting days.

Good Friday, which is towards the end of the Lenten season, is traditionally an important day of communal fasting for adherents of the Reformed faith.[38] In addition, within the Puritan/Congregational tradition of Reformed Christianity, special days of humiliation and thanksgiving "in response to dire agricultural and meteororological conditions, ecclesiastsical, military, political, and social crises" are set apart for communal fasting.[73]


Having issues with an eating disorder, I feel equipped to answer your question. The purpose of fasting is to take the focus off of being fulfilled by anything other than God. You can confess your addiction to the Lord and fast with the anticipation that He will free you from this addiction. Fasting and praying can help you gain mastery over your thoughts and behaviors. The enemy will try to attack you with all kinds of nonsense, but if you are prepared for the attack with God's Word, you will stand strong. After breaking the fast, employ the wisdom and self control that you gained during the fast and refuse to accept your former behaviors.
In addition to these, there is the fast of repentance which a person keeps after committing sin, it being imposed as a penance by the priest for seven days, forty days or one year. There is also a fast which a bishop keeps at the time he is consecrated. Also there are fasts that are widely observed but which have not been included in the canon of the church and which are therefore considered strictly optional such as the "Tsige Tsom" or Spring Fast, also known as "Kweskwam Tsom" which marks the exile of the Holy Family in Egypt.
As we prepare to celebrate the resurrection of our Lord Jesus Christ, many people will use this time to fast and pray as a way to draw closer to Jesus. Fasting is a powerful way to eliminate distractions so we can gain clear guidance from God for our work any time of the year. We hope that this blog helps you understand the point of fasting and ways you can get the most out of this important spiritual practice for your work as well as your life.

^ Bhikkhu, Thanissaro (5 June 2010). "Questions of Skill". Access to Insight. John T. Bullitt. Retrieved 7 June 2011. Each time you're about to act, ask yourself: "This action that I want to do: would it lead to self-harm, to the harm of others, or to both? Is it an unskillful action, with painful consequences, painful results?" If you foresee harm, don't follow through with it.
To keep my energy levels up during strength training, I use a couple of pre-workout supplements: For energy and pump I take Naked Energy (It’s Keto Approved), and for strength and endurance I mix in a scoop of Julian Bakery exogenous ketones. I have found that this really takes my workouts to the next level. I always suggest getting these two supplements to anyone that wants to get into keto.
Longo warned that any fasting diet should start with a visit to the doctor. Fasting studies have not been done in children, very elderly people, or people who are underweight — so it’s possible fasting could be harmful in these cases. “If you’re a diabetic and taking insulin or any other drugs, or if you have metabolic disorders, you should not fast,” he added, noting that fasts done poorly can also increase the risk of gallstones.

^ 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.
When you consistently eat every few hours and never miss a meal, your body becomes very inefficient at burning fat as a fuel, and this is where the trouble starts. It's important to recognize that, with few exceptions, you cannot burn body fat if you have other fuel available, and if you're supplying your body with carbohydrates every few hours, your body has no need to dive into your fat stores. When you apply intermittent fasting you not only avoid this but also will typically decrease your food costs and increase your health.
Dear Adrian, I'm back after several months off on again off again tries. I actually did lose a total of 12 lbs. I started out at around 152 lbs and within a month & a half I was dropped down to 140! I was so happy... But unfortunately I over did an exercise routine of yours so badly I was unable to walk without pain shooting up my legs. ABSOLUTELY NO FAULT OF YOURS! I am the idiot for getting so excited about losing weight I got the attitude of " the more , the better" I advice to anyone don't ever over do anything cause it will have repercussions!! Long story short - after the awful pain I brought on my body I gave up on everything! It took a while to gain the lbs back but unfortunately it is now the end of September 2018 & I'm not only back to 150lbs but more like 158!!! I have started back with Adrian's trusted program & I pray I don't give up or ever, ever OVER DO IT!! I will keep you posted!
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.
Christian fasting is more than denying ourselves food or something else of the flesh - it's a sacrificial lifestyle before God. In Isaiah 58, we learn what a "true fast" is. It's not just a one-time act of humility and denial before God, it's a lifestyle of servant ministry to others. As Isaiah tells us, fasting encourages humility, loosens the chains of injustice, unties the chords of the yoke, frees the oppressed, feeds the hungry, provides for the poor, and clothes the naked. This concept of fasting isn't a one day thing - it's a lifestyle of servant living for God and others.

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Those desiring to receive Holy Communion keep a total fast from all food and drink from midnight the night before (see Eucharistic discipline). The sole exception is the Communion offered at the Easter Sunday midnight liturgy, when all are expressly invited and encouraged to receive the Eucharist, regardless of whether they have kept the prescribed fast.
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