Eating all your meals in an 8-hour window (say, eating between noon and 8PM, and fasting the other 16 hours a day) causes significant weight loss without counting calories.[1]  While this type of intermittent fasting causes weight loss no matter what people eat, research shows that people who do it in a healthy manner lose twice as much weight (7% vs. 3% of their body weight) as those who fast while still eating junk. So it’s still important to follow a high-performance diet like the Bulletproof Diet while you fast.
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.
Hi Adrian. I hope all is well with you. I was referred to subscribe to your channel last night and I did. Well, not sure where to start BUT... I have been on my journey with weight loss for a while now and on April 16th of this year I decided to try intermittent fasting. I broke my fast a few times the first week but after that I have been doing well, going to the gym and working out 4-5 days a week doing mostly cardio. From what I've been reading and seeing about IF, people are losing 5-8 lbs a week. Me? I've only lost 4.7 lbs. I am happy for the 4.7lbs down but I was thinking that being the weight that I started (245.4 lbs) would mean I would lose the weight faster. No? I also am watching what I eat via MyFitnessPal to help me count my calories. I usually east between 1200 - 1450 calories. There are days that I have eaten a little less but not much. Also I am 5'1. Please help me because I am discouraged and frustrated doing all I think is right with IF but not seeing the maximum results as people have mentioned. What do you think may be the issue here? Also there is nothing wrong with me medically to say that's the reason I am not losing much weight. I hope to hear from you because I really don't want to give up. I am trying to be healthy! Thank you. (I also sent this message to you on YouTube. Not sure which messages you check more frequently).
In a physiological context, fasting may refer to the metabolic status of a person who has not eaten overnight, or to the metabolic state achieved after complete digestion and absorption of a meal. Several metabolic adjustments occur during fasting. Some diagnostic tests are used to determine a fasting state. For example, a person is assumed to be fasting once 8–12 hours have elapsed since the last meal. Metabolic changes of the fasting state begin after absorption of a meal (typically 3–5 hours after eating).
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