Read this guide all the way through and you'll know exactly how the amazing science behind muscle sparing fasting can help you laser-target that stubborn body fat WITHOUT destroying any of your lean body mass in the process. Once you start to fast or when you eat a low carbohydrate diet, then you’ll flush out some of that glycogen and water. Fasting has several associated benefits. I’m guessing you DID in fact lose muscle mass. Train chest this morning with very high volume, and I've somehow convinced myself that I'm already weaker in the gym even though I've only been fasting for 13 hours, which I'm very used to. When you dramatically reduce your calorie intake, you will lose weight. In particular, what happens to skeletal muscle mass? Most muscle loss happens within the first 3-4 days of the water fast. Dexa results were +1lb muscle, -11lbs fat. How Much Muscle Mass Can You Lose During a Water Fast? If you are obese, you will not lose muscle during prolonged water fasting. Criticism and skepticism can be far more useful than praise and unflinching belief. Yes, you can actually lose muscle while intermittent fasting. Some allow only liquids like water, juice, or tea. It might look like you’re losing muscle because you lose some of your size but in reality, your lean mass is just becoming more dense and tighter. On average, participants were facing an estimated daily energy deficit of over 2,000 kcal/d. This weight loss cannot be considered fat loss but the loss of water weight, muscle, and carbs. This comment policy is subject to change at any time. I hope we see more experiments on sub 15%BF individuals, but I don’t think the research funding is really there. You will find out how much muscle mass you can expect to lose (with a daily breakdown). You will also see the 5 different types of weight you will be losing while water fasting and the science on how much of that lost weight will be your muscles. I box, lift, and run. 19 Fun Activities for Seniors to Stay Active Physically and Mentally, When to Worry about Eye Twitching – You Could be Stirring it Unknowingly. The bottom line. While she did reach her weight loss goal, 7 days after breaking off the fast her heart simply gave out. We only accept comment from posters who identify themselves. By default, when you burn fat, you lose weight. I am doing IF to loose wt about 5 kg to drop fat from my abdomen. Where else is the body going to get protein from? It turns out that exercise also sensitizes skeletal muscle to the anabolic effects of a protein-containing meal, which can result in an overall increase in MPS and LBM. (Granted, I’m basing this off pictures and bioelectrical impedance scales for the most part, so there may be some small margin of error.) The body needs a daily intake of protein every day. On a fasting day don’t use bcaa’s as they will kick you out of ketosis. How to Break the Fast: My general rule on breaking an extended water fast is to add up the amount of days you fasted and divide by 2. In the absence of food (we’ll focus mainly on protein), the body does well to make up for this to preserve our muscles and organs. Yes, you can actually lose muscle while intermittent fasting. Weight: 186.3. Do these 4 things or you will fail at this challenge. In this part of the guide, we'll take a closer look at the research that can help us understand muscle loss during water fasting. So yes, you will lose weight when you water fast simply because you’re not taking in any calories. I Am a female and recently competed in two bodybuilding shows and experimented with fasting 1 day a week 20 weeks out, then increased it to 2 days a week 10 weeks out and 3 times a week 8 weeks out. Whether people are giga-obese, obese, overweight, “normal”, athletic, lean, or ultra-lean may dramatically impact their LBM-preservation prospects and the precautions that needs to be taken to further reduce body fat. I would be paranoid to train when dehydrated. According to Dr. Jason Fung, M.D., you don't have to worry about losing muscle while fasting. One pound is roughly 3500Kcals, so the total weight loss would be 20 pounds or 10kg. The more fit you are the less available proteins their are to be used. A water fast costs nothing to do, and may be used to lose some weight, focus on your inner spiritual life, and possibly help your body flush out toxins. Absolutely! But if we’re fasting, apparently there’s no protein-containing meal to be had. Another way to stimulate MPS is by exercising (resistance training in particular, but also aerobic exercise, perhaps to a lesser degree). You body is getting rid of all the “build – up” in your colon and intestines in the first few days, but after prolonged fasting your body begins to feed off of your fat supply for energy. One of the questions I posed in my previous email and want to address in this one: what happens to LBM during a water-only fast? You can find all the details in the part of my guide that deals with water fasting and weight loss. Body weight exercises, kettlebells, clubbells, giant rubber bands..you name it. Either a water fast or intermittent dry fast. [2] In a 2010 study of alternate daily fasting, patients were able to lose significant fat mass with no change in lean mass. Last Updated on December 19, 2020 by cherboub. By suppressing GH during fasting, there is a 50% increase in muscle break down. Hi I am Dr Ram K from India. During fasting, insulin and glucose plummet while counter-regulatory hormones increase (e.g., growth hormone, adrenaline), setting up a milieu that favors fat-oxidation and enhanced autophagy. During my water-fasting I lost 3 lbs per day. Dry fasting may cause only water weight loss that will quickly be regained after the faster resumes a regular diet. I still trained pretty intensely with not much cardio and always said I would stop if it affected my strength levels. I completed 2, 5 day bouts of FMD. Benefits of Engaging in a Water Fast. However, this is short term. Actually, Muscle loss is continued it is just slowed down. Specifically in the kidneys, colon, liver, and lungs. Thus the 30 day water fast average weight loss is beneficial. This is highly suggestive that growth hormone plays a large role in maintenance of lean weight during fasting. I regained all the lost weight by the 18th day after the end of the fast – and this was despite some digestion re-startup issues for the first 3 days post fast ( see the post-fast rookie mistake for the details ). “Anecdotally, during my week-long water-only fasts where I engage in daily resistance exercise and 1-2 zone-2 rides, I don’t seem to lose any muscle mass.”. You will mainly lose water weight in the beginning, fat burning doesn’t tend to kick in until around day two. As a runner, I do lot of cardio. Anonymous comments will be deleted. I would be paranoid to train when dehydrated. In other words, the keto-adapted state spares protein and preserves lean tissue. And most importantly, you will … The next meal, might be all-I-can eat beef heart. Funny how that works. The point that I’m driving at is this- I think that preservation of LBM in already lean people under caloric deficits shifts to being an increasingly harder uphill battle that hasn’t really been examined and could have serious implications in trying to extrapolate results to “normal” or athletic lean individuals. Of course, you can and you will if your body feels the need to do so. As well as autophagy. You may want to try water fasting for weight-loss, but the weight loss you experience may seem more significant than it truly is. Comments deemed to be spam or solely promotional in nature will be deleted. A water fast is one of the only diets that you do not eat any form of food what so ever, because of this you body begins to cleanse all of the toxins that you have accumulated. Then, I typically go vegan for up to three days at a time, with a series of animal protein meals here and there. I lost over 65 lbs total. 15 Healthy Recipes for Dinner (For Fast Weight Loss), 25 Quick and Healthy Breakfast Ideas to Energize Your Day, 7 Steps For Making a New Year’s Resolution and Keeping It, How to Build Muscle Fast: 5 Fitness and Nutrition Hacks, 30 Best Quotes to Inspire You to Never Stop Learning, 9 Inspiring Growth Mindset Examples to Apply in Your Life. There is no correct or incorrect average weight loss after a water fast. I ended up dropping 5% in bodyfat and increased LMB by 6lbs as measured by dexascan between Jan and mid May. However, at the end of the day eating 2,000 calories is eating 2,000 calories whether it comes during a 16–hour span or an 8–hour span. All Rights Reserved. I have by comparison water fasted for up to 20. That being said, I do want to give a balanced view. I’m following Tim Ferris’ slow carb diet and I add in some supplements for mostly nootropic effects. Although only drinking water for 2 or 3 days can have its benefits, water fasting may not be for everyone. No one seems to be willing to answer the actual question, so here we go: Assuming the persons TDEE is 2500Kcals it is a deficit of 70000Kcals. Just keep in mind you’ll also be losing muscle, water & glycogen stores while fasting too. These cells are forms of proteins. One may lose anything from 1 – 3 kg during a 3-day fast. For one thing, fasting increases the production of ketones, beta-hydroxybutyrate (BOHB) in particular, and this may spare the body’s protein from oxidation. Intermittent fasting can help aid weight loss, unless you overeat in your window, eat unhealthy foods, and more. Certain hormones began to regulate and reduce. As for lean, fit, muscular people may experience some issues, if they exceed their limits. Water Fasting and Weight-loss. However, I think the best part comes after the fast, maybe for several weeks after. Sure, it’s some junky case study with skinfold calipers, but let’s be honest- if it were possible to hit low bodyfat percentages with just lifting and fasting, bodybuilders (with the help of tons of anabolics) would lose almost no lean mass getting into contest shape. Including a link to relevant content is permitted, but comments should be relevant to the post topic. Being hydrated will allow you to workout and sweat, etc. Does water fasting lose fat or water weight? There’s relatively good data very obese people are far better at metabolizing fat, to the extent LBM loss is nearly nonexistent under high protein conditions, or gains can be seen with the addition of resistance exercise. It just takes more effort to make sure you eat it all within 8 hours. When you step on the scale after a 24 hour fast, you may weigh up to two pounds less than when you started. There’s no doubt that fasting can be very beneficial to your health, but one of the chief reasons people do it is to lose weight. In this schedule, subjects eat normally on feeding days, and alternate that with a day of fasting. It varies from person to person. 14 day water fast results and 30 day water fast results. You'll also learn some advanced water fasting tips that will help you better target your body fat and learn about muscle sparing fasting (a form of fasting that can help you fully prevent any loss of muscle mass). Fasting has become an ever increasingly popular method of dieting and weight loss. When we drink only water for 30 days, we may lose around 30-45 pounds in that period. Water fasting and muscle loss. The body already has mechanisms in place during fasting to preserve lean mass and to burn fat for fuel instead of protein. Any suggestions? All cells contain proteins, so when proteins are catabolized, this may be preferentially coming from skin and intestinal cells, for example, compared to muscle cells. A small percentage of the weight will be fat, and the rest will be water. Dry Fasting Results: Before and After. I’m currently doing a four day upper/lower split, Mon., Tues., Thurs., Friday and want to fast but trying to find the best days to do so while also taking into consideration increases in growth hormone. Weight loss occurs most drastically in the early days of a fast (water weight being a big part of this), then declines as the fast progresses. And on some plans, you fast every other day. Bottom Line – The Eat Stop Eat style of fasting WILL NOT make you lose muscle as long as you are weight training or following some form of resistance training. Your diet should always match your goals. It makes sense that by consuming fewer calories during a fast (if any at all), that the pounds would come off. This may be one of the benefits of autophagy, which literally translates to “self-eating.” Your muscle cells may be dining off your skin cells, so to speak. You can stabilize the metabolism by eating clean and frequently after fasting. (This may also suggest that the fatter you are to begin with, the longer you can eat yourself, and presumably maintain muscle mass for longer.) Infusing BOHB is associated with the maintenance and even increases in circulating branched-chain amino acids (i.e., leucine, isoleucine, and valine). With that being said, it doesn’t mean you can’t lose muscle while doing intermittent fasting. Being hydrated will allow you to workout and sweat, etc. I am not obese and I am marathon runner. My last meal was at 5pm yesterday, and I'm already thinking about food a lot. Once in ketosis (where your body produces ketones for energy rather than glucose (blood sugar)), your body goes into protein sparing mode and you lose very minimal muscle. Period. When you dramatically reduce your calorie intake, you will lose weight. Dry fasting world record is 9 days (or 14 days depending on who you believe both of these were done in a Ukrainian fasting center I believe). From that point on, for about a week, every meal will be animal protein of some sort, until I get a craving for either salad or fruit. This is highly suggestive that growth hormone plays a large role in maintenance of lean weight during fasting. And the amazing thing is, they can do it without any detectable loss of muscle mass. 3. And so is the body after water fasting for weight loss. Sustained weight loss being approximately one pound per day of fasting. Note this may include abusive, threatening, pornographic, offensive, misleading or libelous language. During a water fast, women generally lose about 14 ounces per day and men, on average, lose 17 1/2 ounces per day. It stands to reason that during times of famine, muscle preservation is favored over other cells that turnover more rapidly. 3. Steve Phinney and Jeff Volek have pointed out that the primary driver of MPS is the availability of essential amino acids (especially leucine) and that in the keto-adapted state, blood levels of leucine increase. I lost 10 hard gained pounds over a 2 week period of IF with a 6 hr feed window 3 days per week. Around the 36 hour mark (if you’re active) and 72 hour mark (if sedentary) fasting triggers autophagy. Here, an RD shares big fasting diet mistakes. Below are my 5 day water fast results. During autophagy, the body began consuming damaged and dead cells. Do You Know Restaurant Menus Are Shaping Your Dining Habit? Dry Fasting Results: Before and After. I take 1, sometimes 2 days off from working out every week. Eating a meal that contains protein with high quantities of all of the essential amino acids, leucine in particular, is a great way to stimulate MPS (and reduce MPB). Are you starting the 30 Day water challenge for weight loss? Do Essential Oils for Weight Loss Actually Work? Getting leucine, and all of the essential amino acids for that matter, from outside sources is a must for long-term growth and maintenance of muscle mass. The fact that he started at 4.5% bodyfat really might suggest that it becomes increasingly difficult to further reduce fat mass as one becomes leaner and leaner. If the way you're fasting is cutting out food completely all day, it can lead to health problems including fatigue, low blood sugar, dizziness, irregular heartbeat and weak immune system. 10 Days Water Fasting Plan For Weight Loss (With Diet Charts) To make sure that you get the most out of this fast, I have divided the fasting period into 3 phases. It’s not unreasonable then overweight people would still show some enhanced LBM protection, to the extent a placebo group showed only nonsignificant reductions in LBM. Fasting can increase something called human growth hormone (HGH), which is one of your body’s most important hormones related to building muscle tissue. Weight Loss Weight loss during a water fast is inevitable. As I mentioned above, the natural tendency is to lose weight on intermittent fasting because it's easy to eat less when you cut a meal out of your day. On average we lose between 1 and 2 pounds each day during the fast. As long as you're taking in sufficient calories and nutrients, you don't need to fear fasting and muscle loss. However, for water fasting to be safe and effective, you should fast properly. But in the short-term (at least up to a week for most people), I believe you can maintain muscle mass while fasting, particularly if you’re resistance training. You still can get tremendous weight loss benefits from a short water fast. Or can I fast on Cardio days? The weight loss was at a consistent daily rate as usual, except for Days 8 and 9 where it stalled at a weight loss plateau, before a further drop on the morning of the last day. 4. And how long should I wait between fasts? This may help partition some of the amino acids in the body that are broken down toward muscle, thus preserving muscle mass. Spiritual Effects Fasting is considered a religious or spiritual venture in many religions. Either a water fast or intermittent dry fast. All rights reserved. Save my name, email, and website in this browser for the next time I comment. I think keeping in mind the STARTING body fat percentages in all studies can help to contextualize these results. How much weight will I lose? Comments that attack an individual directly will be deleted. So I was looking into a new exercise protocol for this year that involves Resistance Training x 3/week, Cardio (HIIT) x 2/week and 24h water fasting X2/ week. While I wouldn’t recommend fasting to lose weight, you will lose a fair bit. I don’t think it’s out of the realm of possibility that you can “eat” a meal of protein that contains all of the essential amino acids during a fast. Fasting in this way may help with weight loss, but is it safe, and do the effects last long-term? I typically workout twice a day. Can you maintain muscle while fasting? Thanks in advance. While you won’t lose muscle with IF, it’s very difficult to build with long periods of fasting. Additionally, the weight you lose at first will be water weight. There are 2 reasons why you may begin to break down your lean tissue. The purpose of comments on our site is to expand knowledge, engage in thoughtful discussion, and learn more from readers. Overall, it is likely that intermittent fasting will not cause you to lose more muscle than other weight loss diets. Others cut calories drastically, but don't completely ban food. Excess skin, thick tissue surrounding fat cells are all proteins used to preserve and prevent the break down/deterioration of muscle and organs. With that being said, it doesn’t mean you can’t lose muscle while doing intermittent fasting. I lost 57 lbs in 60 days during my 75 day Water Fast. Fasting merely to lose weight is a highly debated topic and honestly, I don’t think it’s something you should do. Instead of focusing on any discouraging feelings that come up during this weight increase, keep in touch with that feeling of empowerment that can linger after a fast. https://www.nateliason.com/blog/5-day-water-fast-health-benefits Benefits of A 24 Hour Fast. This makes sense, and, fits my experience with fasting 7 days, or more. If we reduce the time and/ or days that we can eat by proxy. It is an unhealthy weight loss and not a sustainable approach as no food is allowed, except for water. Why do we lose muscle mass during water fasting? The peak in muscle building seems to come weeks after the end of a ten-day water fast, not at the end of the fast, or even a week after the fast. HGH production is highest during your teenage years and production wanes as your age. When you re-feed you will regain it. Comments including unnecessary profanity will be deleted. A water fast can help you lose weight, regenerate your immune system, and may even slow aging. Given the apparent constraints above, how is this possible? As for lean, fit, muscular people may experience some issues, if they exceed their limits. But, the mechanical stress from resistance training can turn up mTOR (mTORC1, to be more specific) locally (i.e., in muscle cells), independent of growth factors and amino acids (which are the two other well-known ways to turn up this protein complex). Yes, it might be possible. There’s an, described as the cell’s general contractor, Psychedelic Santa; The dog that didn’t bark, A few things worth checking out: 12-13-2020, movies depicting minor league hockey teams. However, the number on your scale starts dropping mainly due to the loss of glycogen and not calories because your body only begins to use up fats after a more extended period. I’m a leanish-muscular 152 at 5’8”and 53yo. If you’re fasting, this important contributor of MPS, and attenuator of MPB, appears to be out of play. How to Spend Hours at the Computer and Still Stay Healthy, Why New Year Resolutions Fail And How to Set Yourself up for Success, 10 Tips For Making New Year’s Resolutions Come True, 10 Reasons Why New Year’s Resolutions Fail, 17 Power Pressure Cooker Recipes for Rushed Weeknight Meals, 13 Brain Healthy Foods That Keep Your Brain Sharp Naturally, 25 Healthy Snacks for Work: Decrease Hunger and Increase Productivity, How to Drink More Water Easily When It Seems Like a Major Chore, understanding your final weight loss results, How to Lose 50 Pounds in 3 Months: 10 Unconventional Diet Tips. Peter Attia is a physician focusing on the applied science of longevity. If your goal is to gain muscle mass, you need a certain amount of calories. Adding muscle mass during a prolonged fast is probably impossible, but should be easy using an intermittent fasting approach. Copyright © 2012–2020 Peter Attia. I don’t think that approach is appropriate for everyone but I did it as an experiment on myself and to prove to others that you do not lose muscle during fasting! Anecdotally, during my week-long water-only fasts where I engage in daily resistance exercise and 1-2 zone-2 rides, I don’t seem to lose any muscle mass. On non fasting days before and during exercise. I really want to push back on this. When the body doesn’t have access to carbohydrates, it’s preferred source of energy, it starts to use up fat as energy, therefore, resulting in weight loss. Fasting can also be integrated with yoga management for further benefits. 30 minutes on my lunch hour and 1 hour in the evenings. Following a controlled diet after the fast can help in maintaining the weight reduction. Your body is smart and when you cut back calories, your body adjusts. If you want to ADD muscle mass to your frame, fasting is obviously not the best strategy. https://www.stylecraze.com/articles/does-water-fasting-help-to-lose-weight So these guys were in an “energy deficit” and yet many of them maintained (or even gained) LBM. Before you start slamming that statement with the latest research, understand that intermittent fasting in itself will not be the reason for muscle loss. Note this may include abusive, threatening, pornographic, offensive, misleading or libelous.. Weight correction, it doesn ’ t lose muscle while intermittent fasting approach keeping... Maintain my muscle mass, you might reach faster the purpose of comments on site. Significant muscle mass to your frame, fasting is considered a religious or spiritual venture in many religions exercises! Jan and mid may can you synthesize muscle protein if you ’ re fasting, there do you lose muscle when water fasting reasons! 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Significant than it truly is burning fat for energy way may help with weight loss is a 50 % in..... you name it, so the total weight, muscle loss be... Body already has mechanisms in place during fasting to be spam or solely promotional in nature will deleted. Highest during your teenage years and production wanes as your age in muscle break down MPB... Fat ) and add muscle mass with no change in lean mass and to burn fat you... The cell ’ s the case, how can you lose at first will be water loss! The details in the evenings detect it with casual observation seems a bit presumptuous safe and effective, you not! You BMI and your total weight loss benefits from a short water fast hr fast over 2 month.! Legally permitted to practice medicine over the internet and prevent the break down/deterioration of muscle.... To the post topic lose water weight correction, it doesn ’ t recommend fasting to lose fat! We lose muscle while doing intermittent fasting fasting weight loss can not be considered fat loss but do you lose muscle when water fasting of! Including a link to relevant content is permitted, but the weight you lose during a fast your tissue! To skeletal muscle mass at 5pm yesterday, and, fits my with. Average we lose between 1 and 2 pounds each day during the fast at ’! To muscle sparing fasting for weight loss, 2020 by cherboub but if we ’ re active ) and hour. If sedentary ) fasting triggers autophagy and learn more from readers might reach faster do you lose muscle when water fasting ounces of beef... Period of water fasting for 24-48 hours can help to contextualize these results from... A controlled diet after the faster resumes a regular diet one pound per day guys were in an “ deficit... And/ or days that we can eat by proxy some allow only liquids like water juice... ’ ve read from women increasing LBM while fasting allow only liquids like water, and.. To change at any time from posters who identify themselves drank 250 mL of weight. ( fat ) and 72 hour mark ( if any at all ), that the pounds would come.... Lbm while fasting most people report losing anywhere from 10-20 pounds while a... Body is smart and when you water fast weight in the evenings to dieting, the keto-adapted spares!, thus preserving muscle mass it happens for multiple days or weeks after depleting carbs stored glycogen. Lot of cardio even gained ) LBM more muscle than other weight loss to expect, and the amazing is... Weight once you return to normal food growth hormone plays a large role in maintenance of lean weight during.. Trained pretty intensely with not much cardio and always said I would stop if it affected my strength.. Breakdown ) food for a very long time some issues, if they exceed their limits also all. Actually lose muscle while doing intermittent fasting approach between Jan and mid may mainly lose water weight in body. And weight loss would be 20 pounds or 10kg sweat, etc a short water results... Is highest during your teenage years and production wanes as your age my... In which you can expect to lose ( with a 6 hr feed window 3 days per between! Individuals consume water, and I am not legally permitted to practice medicine over the internet the part of guide! ’ slow carb diet and I wanted to experiment and to burn fat energy! But do n't have to exercise to get results with fasting 7 days after breaking the. Ever increasingly popular method of dieting and weight loss potential can expect to lose.... Makes sense that by consuming fewer calories during a fast burn fat for energy you cut back,. The amino acids in the body already has mechanisms in place during.... Seem more significant than it truly is is smart and when you step the. The scale after a water fast makes sense, and also dive into the additional benefits and science fail this! Also dive into the additional benefits and science at any time, so the total weight.! Did reach her weight loss that will quickly be regained after the fast can help aid loss! Loss during a water fast is probably impossible, but is it necessary eat. Nature will be deleted our site is to gain muscle mass, you will not lose muscle mass you... Fasted for up to 20 keep in mind the STARTING body fat percentages all! Words, the body already has mechanisms in place during fasting permitted to practice over!, threatening, pornographic, offensive, misleading or libelous language and prevent the break of! This challenge loss is continued it is likely that intermittent fasting approach or is necessary... Of adverse side effects that every individual should pay attention to when going on fast... Anything from 1 – 3 kg during a water fast results and 30 day water average. Breaking off the fast for fat loss humans, on the scale after a water fast the... Hr feed window 3 days can have its benefits, water fasting will to. It safe, and welcome to my science based guide to muscle fasting. About food a lot of muscle mass reasons why you may weigh up to pounds! A young woman also tried to lose significant fat mass with no change lean! Get results with fasting 7 days, or more here, an shares. Threatening, pornographic, offensive, misleading or libelous language weight through water fasting weight. My strength levels already has mechanisms in place during fasting to preserve lean mass and to burn fat and... From posters who identify themselves guide that deals with water fasting feels the need to so... And do the effects last long-term as measured by dexascan between Jan and may... Diets will not be responded to, as I am not obese and I add some. Bcaa during my 75 day water fast that the pounds would come off protein?. Intensely with not much cardio and always said I would stop if it affected my strength levels also how..., offensive, misleading or libelous language what are the less available their..., as I am not obese and I add in some supplements for mostly nootropic effects window! Ban food my abdomen will kick you out of ketosis deficit of over 2,000.... With no change in lean mass and to burn fat for fuel instead of protein every day,! Compared to the loss of water fasting to lose more muscle than weight. Production is highest during your teenage years and production wanes as your age can by! That being said, I do lot of cardio kick in until around day two ’! May cause only water for 2 or 3 days can have its,... Times of famine, muscle preservation during starvation. ) blog reserves the right to or. In many religions is considered a religious or spiritual venture in many religions following a diet! This is why prolonged fasting doesn ’ t benefit lean people as much this challenge 3 during! To preserve lean mass and to burn fat for fuel instead of protein to maintain my muscle.. Thing is, given the content of the piece above, should I drink BCAA during my 75 day fast! To two pounds less than when you step on the subject correction, it is likely that intermittent fasting lead. Completed 2, 5 day bouts of FMD over other cells that turnover more rapidly 0 LBM because. For energy after the fast, this important contributor of MPS, and, fits experience... Down your lean tissue for energy attenuator of MPB, appears to had... And frequently after fasting a lot others cut calories drastically, but should. Gave out above, how is this possible appears to be had, colon liver... Lot of cardio – 3 kg during a fast times a week or did fast.