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Intermittent fasting is the hottest dieting trend since keto. (Bonus points if you’re keto and intermittently fasting. You can probably fly now!) The gist is that people attempt to lose weight by only eating between certain hours, or they restrict their eating on certain days of the week while allowing themselves to eat normally the rest of the time. That’s the “intermittent” part: Eat regularly most of the time, restrict your eating other times. Then there’s a subset of intermittent fasting known as the 5:2 diet, in which people eat regularly five days of the week and take in a very restricted number of calories on two days.
I take a 1200 calorie diet and I exercise. A lot. In the morning I have a cup of coffee and do a 1:30hr workout consisting of 2 HIIT workouts and a strength workout along with A 20 minute fat burning yoga. I open my fast at 2pm and stop eating at 8pm after 3 hours before sleeping I do another 1 hr workout. One HIIT workout and some cardio. Then I go to sleep. Acc to my calorie calculator I burn around 600-800 calories. I try my best to eat as healthy as possible but I’m seeing no results. I tried following all the advices I could find but I don’t understand what’s wrong. People are losing this much weight in a week. It’s very disheartening for me.
The drawbacks were clear. The men became obsessed with food to the exclusion of everything else in their life, and when the calorie restriction ended, they all over-reacted. Within a few weeks, they regained all of the lost weight plus about 10 percent more. Other studies have come to similar conclusions. So starvation-type diets may not be ideal for the average person. Your body will tend to shut down various processes in order to survive. For example, by reducing thyroid function, your body will not burn as many calories.
As it turns out, the science behind these diets is still pretty nascent and exploratory — more than the acolytes might have you believe. While there’s lots of animal research, human studies on fasting are only just beginning to ramp up. And while we have learned that fasting helps people lose weight, it’s only if you can stick with it. But that doesn’t make fasting any less fascinating. Here’s what we know and don’t know.
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.
During the Biosphere 2 experience and the Calerie trial, some researchers hoped CR would become a viable regimen. But the enthusiasm has significantly cooled. While side effects were an issue, people’s inability to stick to a significantly reduced calorie load every day was the hammer blow. At this point, fasting was CR’s heir apparent: It seems eating nothing on occasion might be better than eating less all the time.
I sometimes hear people say, "I'm giving up chocolate" and they regard this as a type of fasting. I think this is a rather frivolous approach. The first and foremost purpose of a biblical or spiritual fast is to get a breakthrough on a particular matter that one lifts up to the Lord in prayer. A spiritual fast involves our hearts and the way in which we relate to and trust God. It relates to discerning and receiving strength to follow through on what God might reveal to us about circumstances in our lives or a direction we are to take.
Fasting is a practice in several Christian denominations and is done both collectively during certain seasons of the liturgical calendar, or individually as a believer feels led by the Holy Spirit. In Western Christianity, the Lenten fast is observed by many communicants of the Catholic Church, Lutheran Churches, Methodist Churches, Reformed Churches, Anglican Communion, and the Western Orthodox Churches and is a forty-day partial fast to commemorate the fast observed by Christ during his temptation in the desert. While some Western Christians observe the Lenten fast in its entirety, Ash Wednesday and Good Friday are nowadays emphasized by Western Christian denominations as the normative days of fasting within the Lenten season.
Discipline your body through fasting. When you become especially aware of your own sins and weaknesses and your resulting need for God’s grace, consider fasting as a way to learn discipline that will help you grow. If you discipline your body through fasting, your spirit will follow, and you’ll grow closer to God – which will transform you into a more loving and holy person. Routinely schedule one or two days each week to fast. Use the time to respond physically to the reality of a broken world, the presence of sin in your life, and your yearning for more love and holiness. But beware of using fasting as a weapon to battle your body’s appetites. Remember that food isn’t an evil to be battled; it’s a good gift from God that you’re simply choosing to refrain from for a time in order to focus on responding to a sacred moment.
I have found that the 4:3 style fasts have worked well for my friends and me based on our work/life schedule and our personal health goals. I like that full day fasts feel like an on/off switch — I don’t think about eating on fast days and on eat days if I happen to overeat, I don’t feel guilty about it (since I’m eating at a deficit during the week). I find it more manageable to cut calories over a week (using the 4:3 style of IF) instead of every day (trying to eating less daily).
While these five methods are the most well-known in terms of integrating periods of fasting into your eating schedule, there are many other similar philosophies based on meal timing. For those who prefer a more fluid, less rigid method, there’s also the concept of eating intuitively. Primal Diet proponent Mark Sisson is a supporter of the Eat WHEN (When Hunger Ensues Naturally) method, where dieters simply eat whenever their bodies ask them to. However, some believe this can also lead to overeating or overconsumption of calories, since our bodies’ hunger-induced choices may be more caloric than otherwise.
When it comes to intermittent fasting, there’s no one-size-fits-all. Bulletproof Intermittent Fasting fits all your eating into a 6-hour window, leaving you with an 18-hour-fast each day. This is often called “18:6” fasting. You can also try variations such as the one-meal-a-day method, or fasting every other day. The key is to experiment and listen to your body to see what works best for you. If intermittent fasting causes fatigue or other negative symptoms, try fasting just once or twice a week, and build up from there.
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).
Now there's certainly an issue of food that is associated with many seasons of prayer and fasting, and let me quickly add this: control of eating is a valid reason to fast. The purpose is not the number of pounds you might lose during a fast, but rather, trusting God to help you regain mastery over food during a fast. Jesus said, "The spirit is . . . willing, but the flesh is weak" (Matt. 26:41). Fasting is a means of bringing the flesh into submission to the Lord so He can strengthen us in our mastery over our own selves. Fasting in the flesh makes us stronger to stand against the temptations of the flesh. Those temptations very often deal with food.
On its web site, the Academy of Nutrition and Dietetics says that although there is evidence that intermittent fasting diets may help prevent chronic disease, more research is needed. It doesn't recommend the diet because "it is not a realistic long-term solution.” The academy also notes that "any variation of fasting may make a person irritable, cause daytime sleepiness/sleeplessness at night, and can even lead to dehydration."
There are a couple of other caveats here. Fasting diets require working through hunger, saying no to the bagels and muffins put out in your morning meeting or the food at your business lunch. So it’s no surprise that many people can’t stick to fasting diets long enough to keep the weight off. In another 2018 review of the literature on fasting’s impact on weight, the researchers note, “Dropout rates have been as high as 40 percent. Thus, despite the statistical significance of weight loss results, the clinical significance and practicality of sustaining an [intermittent fasting] regimen are questionable.”
When we fast and pray, God teaches us how to share with those who have physical and spiritual needs. “Is it not to share your food with the hungry and to provide the poor wanderer with shelter—when you see the naked, to clothe him, and not to turn away from your own flesh and blood?” (Isa. 58:7 NIV). The book of Proverbs complements this passage by reminding us that when we give to the poor, we lend to the Lord. Fasting and prayer put the self-life into perspective. You are never more like God than when you give. Prayer and fasting can build within you the character to give. Giving is a joy, and we need to be willing to pour ourselves out to those who can do nothing for us in life. We need to be willing to pour out ourselves to anyone, anytime, anywhere. This is the heart of Jesus, and it needs to be our heart. Prayer and fasting build within you the power to give.
Once when the Buddha was touring in the region of Kasi together with a large sangha of monks he addressed them saying: I, monks, do not eat a meal in the evening. Not eating a meal in the evening I, monks, am aware of good health and of being without illness and of buoyancy and strength and living in comfort. Come, do you too, monks, not eat a meal in the evening. Not eating a meal in the evening you too, monks, will be aware of good health and..... living in comfort.