Does Intermittent Fasting KILL MUSCLE? (Diet Confusion) Updated on October 18, 2019 By William Clement 100 Comments By William Clement 100 Comments LoowheezeBreeze April 17, 2019 So… Does Intermittent Fasting KILL MUSCLE? Reply fergy773 April 17, 2019 I love you and your knowledge is immense but intermittent fasting is not a diet it’s a lifestyle Reply Gabriel Brewster April 23, 2019 Intermitting fast. I tried it. I dont know if it works but it actually is easy to do. Just dont eat past 8 and skip break breakfast. Thats pretty easy to sustain. Reply d f April 24, 2019 Try intermitted fasting for a week, if its sustaibable for you, continue it. If you can't, dont do it Reply keelo tan April 28, 2019 Intermittent fasting is good if you want to keep healthy pancreas and avoid diabetes. Reply Mike Siga April 28, 2019 I love your videos and now came across this. With this being a 5 year old video, you should definitely do a remake of your thoughts and research of this "diet". I'd have to disagree with you on this one. Reply RMR May 1, 2019 I just can't stay away from the chocolate….I keep on trying but fall back to it… Reply Patricia Vargas May 2, 2019 I'm a 44 years old woman whose never has had any over weight issues, I'm not diabateic either and I've been doing intermittent fasting for the past 5 years now and I'm at my best shape ever, both psysically and mentally. I used to be skinny fat and with strength training in a fasted state (using dumbbells or resistance bands or using my own bodyweight) five days a week (three days of strength training and 2 days of HIIT) along with 18/6 of intermittent fasting, my body is stronger, with lean bigger muscles and my 'muffing top' it's gone now. So yes, doing a low carb diet with no supplements of any kind and using intermittent fasting as a tool to help me out to reach my goals, has been highly beneficial for me and I couldn't be healthier, happier and more proud of my lifestyle now. Greetings from Mexico. Reply Ghanem M May 10, 2019 Mate, you just answered the question without researching the topic. Reply Ghanem M May 10, 2019 And how do you throw a money scam on fasting, it's just eating less of what you already eat, big thumbs down, this guy is complicating everything, our ancestors didn't drink supplements, they ate what they had or what they found and hunted, Harden up, eat less, train hard, and of course dont rely on empty junk food calories, keep it simple, and no "athlean x" food plans. This guy reminds me of a friend of mine always figuring out when his next meal is. These people cannot survive in a harsh environment. Like I said, harden up Reply Magnas Spur May 11, 2019 Lier Reply Rob Sve May 11, 2019 This is the first time I sincerly feel youre talking jibberish, Jeff. Heres some food for thought; Ask regular people over 50 f breakfast seems unatural to them and if they usually skip it. Then ask them if they knew they were following a diet for 30 years. And if that doesnt speak for itself. The word ”BreakFast”. How did that come about? Thanks for your other videos though, theyve helped me a bunch! Reply Danny Lopez May 11, 2019 When junk food, fast food, msg, processed food, and lack of time became factors in what we eat for decades, things became complicated. When we let our hands get tied, we were spoon fed addictive junk along with ideas of entitlement to overeating. Eating healthy shouldn't be a struggle, yet it feels like being in rehab with withdrawals. I need cheese on everything I eat. If there's already cheese on it, add extra cheese. When I fast and cleanse, I break the craving for cheese. But it doesn't always stick. I fall off the wagon and eat a whole pizza. Lol Reply AustinBigWig May 13, 2019 Usually agree with Jeff, but IF is not a diet, it is a lifestyle (long term). Reply Maddcat1979 May 15, 2019 I am 40, have had a broken back, doctors gave up on my condition and I recovered by sheer will. I suffer from severe hypothyroidism and the shittiest possible genetics. What I have is conviction, I have been living an OMAD keto warrior lifestyle and have been doing so for two years. I don't give a shit about any any useless food that is not giving me optimal nutrition. I work out 6 days a week without fail and now I am at 10% body fat which should be impossible for a person like me but I am dedicated and don't make any excuses. It took me several years to clean my diet, got rid of cheat meals and all those cravings and now they don't matter. Bring anything and I won't give a shit. I can do anything. Nothing is impossible and nothing is easy. So, any of these diets can be a lifestyle if you choose to make it so. Reply Effective Training with Mario Bortas May 17, 2019 I was down to 155 lb from 220lb in like 6 months, IF works but l have to say l was exercising 4 to 5 days a week also, IF and exercises are a good combo. Reply Wendy Francis May 17, 2019 George St. Pierre chokes Jeff out while fasted. Reply John Borealis May 18, 2019 I don't eat my 1st meal until 3 o'clock everyday. I do however drink a protein shake after morning caffeine. I'm literally a hangry maniac until 3 p.m., or later, if I don't get a chance to eat. I started solid food "fasting" because breakfast and lunch makes me tired and sick to my stomach. I don't advise it if you have a short fuse. I am strong as an ox, but I lose my temper quite often. Reply descargaelbano May 19, 2019 6 hour eating window? I eat only high fat meat once a day at night. I have only worked out 5 times in the last two months and my arms have gone from 14" up to 15". Simple way of eating, never hungry and have more energy than ever in my 52 years on this Earth. Reply Aaron Rios May 21, 2019 Guys this video was made 5 years ago when If wasnt that popular . I hope jeff made a new video with all d new research found i hopw we will be surprise Reply Richard Major May 21, 2019 Thought this was about the 5:2 diet (600 calories for two days); oh well. Reply David Seney May 23, 2019 IF is a easy life style to live… But I dont think its the best to be athletic and strong. You can only have so much protein a day which I dont think can add any mass to a guy whos built. Reply dirk jones May 26, 2019 I am just starting 16/8 IF …I am reading people saying they simply skip breakfast. I love breakfast but have no issue putting it off a few hours to fit into the eating window. Is this a bad idea ? Reply o lo May 27, 2019 awesome video…. so down to earth. Reply JavyT30500 May 30, 2019 I been 7 days doing IF and lost 7lbs and 1% body fat so far, why waste a ton of money and time worrying about what to eat? Reply Jake Drago June 2, 2019 Every time I hear Jeff go on an anti IF or anti Keto etc rant his key point is always long term sustainability the problem is I find that eating 6x per day in smaller portions is the most unsustainable diet of all. IF is the easiest and cheapest and it has become a easy to maintain lifestyle that has given both me and my wife results we both never thought possible . I’ve reversed my pre diabetes and lost 60lbs my wife has lost 40 lbs after having her thyroid removed . Jeff is a great trainer and his workouts are as good as it gets but this one thing I must strongly disagree with him on . Reply Max S June 3, 2019 The only video I disagree with Jeff Reply Gonzalo Navas June 6, 2019 I'm next to two years doing intermittent fasting, it has teaches me to eat properly. I feel better I've lost weight and I enjoy food a lot more now. Intermittent fasting is not a joke. And you are not speaking about insulin and the troubles it makes. Besides, intermittent fasting is not a religion, is a TOOL that you can use normally and make you skip it with conscience if you feel like doing it. I don't agree here, Jeff, not one bit. Reply Benjamin Johnson June 7, 2019 I think it all depends on what time you exercise as well, in correlation with your nutrition plan. Reply Emil Sverin June 8, 2019 IF is the easiest and best way to set up a lifestyle without failure or feeling its hard, and for me it was the only thing that really worked, dropped 15kg by IF and gained muscle and then started to follow a normal nutritionplan when i eat 5-6 times per day with good food and lots of protein and as always i keep workout the AX programs. And the thing is, im now back on IF cuz i feel much more relaxed and focused and by the way i didnt drop a single kilo by eating in a normal eatingwindow even if it was really good food. So now to strip of the last % of bodyfat im back on IF, the AX mealplan or my wifes mealplan only works for staying in the same weight.. Reply Danny de Vries June 8, 2019 Ketogenic and intermittent can be a lifestyle and isnt hard to do… Reply Juan Sarmiento June 9, 2019 I have been in OMAD for 10 years. I first lost 28% of my body weight, went from obese to normal, the continued with HIIT and have gained muscle all along. I was 52 when I started One meal a day and now I am 62 and feel better and athletic than when I was 30. I have the photos to show it www.feastfastforlife.com/gallery Now I am in OMAD for the rest of my life. The benefits (SCIENCE) are innumerable. To say the contrary shows ignorance of the subject. Reply cruz perez June 10, 2019 What would I do without Jeff's advice Reply Ed June 12, 2019 Awful lot of comments disagreeing with Jeff on this one. Although as per usual not a single one of them provides a single citation. As far as I am aware calories in V calories out is the only thing which will lead to weight loss. At the end of the day if IF works for you to control your calories then it works for you. But it's because you are eating less calories not because you didn't eat Monday (or a variation thereof). Reply Pedro June 14, 2019 What an idiot. IF is a lifestyle. U get to eat out more and live your life to the max.Those typical oats, chicken breast, bla Bla Bla.Meal plans are a waste of time.Fucking moron Reply Michael Dubickas June 15, 2019 Intermittent is very big word . Use it . Reply rlachermeier June 16, 2019 This is an old video. I think we've learned allot since then about IF. Reply M888ARK Mark June 16, 2019 48 years old and been eating what is now called intermediate fasting for well over 30 years. Reply Malcolm Wright June 19, 2019 I been doing fasting for 2 years feels good Reply Mo Luj June 19, 2019 I think it really depends on your body's metabolic rate. I tried IF for about 4 months 2 years back and yes I did lose a significant amount of weight (17KG). However I was still unhappy with the end results; my skin was loose in certain areas like the arms, thighs and belly. My chest looked terrible, somehow pointier than before and really puffy around the nipple area (I'm male so this aint good lol).3 months ago I started working with a personal trainer/nutritionist to work on my body recomposition and I've made more progress on my body than I could have ever dreamed of, and I just changed one very simple thing; an increase on the amount of times I eat a day. I was advised to eat high protein meals every 3 hours. This doesn't mean I ate a full meal every 3 hours, just 3 full meals plus snacks in between. I wouldn't even think of it as a diet cause I'm now eating more food per day than I've ever eaten before. That plus an increase in resistance training (weight lifting) and HIIT (High intensity interval training) should get anyone struggling to get fit pretty far. I'm 3 months in and my arms and legs have gotten significantly toned, quads are popping, biceps and triceps finally showing plus abs are very clear (on an empty stomach XD). My back changed the most, looks ripped af tho got a long way to go on my chest, but at this rate I see it happening in less than a year. Please note, I started out pretty fat, the kinda fat that turned eyes in my direction the moment I stepped into a room. I feel like IF works best for someone that's nearly there in terms of having a fit body, but i wouldn't recommend it for anyone really big unless ur pairing the diet with intense exercise. Hope this helps/motivate! (Not a professional by any means, speaking from experience) Reply Daniel Naemi June 21, 2019 IF only kills muscle if you dont weight train and eat protein Reply miguel vasquez June 22, 2019 Probably the only time I disagree with you. Reply 3v0squad June 24, 2019 After this video I’m starting to question all the advice this bloke has given as he’s completely wrong about IF Reply Raul Herrero June 26, 2019 he should redo a video Reply Jillian Boots June 27, 2019 I absolutely love Jeff and feel he's legit compared to many others out there. However, women shouldn't have 5-10% body fat. I wish he spoke more on women specifically. I know there's athlean xx but there aren't any nutrition specific videos there and he does not run those. I understand a lot of nutrition is geared towards both genders and "guys" is slang some times for both genders. But I hope he can speak to some more specific female information especially on nutrition. Reply CrumbyTie June 27, 2019 Last time I check, starvation isn't healthy Reply bttypst June 28, 2019 intermittent fasting is not a diet. Reply Himanshu Kanojia June 28, 2019 The problem with athlean is that he believes only his protocol is legit and all the rest is fad . Specially when he has not even tried any of them . Reply Artak Grigoryan July 1, 2019 To me each of these protocols except for Juice Diets, can be sustained for many many years, and it really comes down to individual and personal preference. Interment Fasting – 16/8 protocol is easy to do for the rest of your life. But some people want to do OMAD cause they want their big one meal. That is how they like it. IIFYM – this is is literally a middle finger to all diets out there, so what can be hard about IIFYM is unclear to me.No Fat – there are people who dont like fat, like myself. Who could not care less about fats in their meals. Keto – there are people who like fats unlike myself, who can eat 70 % fat and feel very happy. Healthy balanced eating without these protocols maybe the optimal and "normal" way of eating for most people. But there are many many other people who dont feel that way. Reply Remy LeBeau July 4, 2019 Hello Jeff . With the I.F how much I can wait before to take my first meal in the morning after my fasted workout? 30-45 minutes or close to 2 hours ? I'd like to complete my 16/8 protocol after my workout but I don't want to take my last meal at 4 p.m so I can eat at 8.am. thank you Reply Rob Host July 5, 2019 If intermittent fasting works for you, it works for you. But I don’t believe in fasted workouts. How can you maintain the same energy levels that you otherwise would have were you not fasting? Reply Michele Corwin July 10, 2019 You need to educate yourself more and face the fact that the things you're putting down work. You just told on yourself. You've asked 1000 people to do food diaries and a handful did. That's old school and has not solved any problems for decades. Best wishes Reply Resonare Fibris July 11, 2019 IF helped me a lot when im working out and building muscles. And so are a lot people even in this comment section GET YOUR FACTS STRAIGHT JEF Reply For Health July 12, 2019 Intermittent fasting a fad? The long term practicality of it? Heres the answer. autophagy. Growth hormone. Reduction of inflammatory cytokine expression and oxidative damage Reply Jo C July 12, 2019 This video doesn’t hold up! Reply Martin Huberts July 12, 2019 What's up Jeff, would you revisit intermittent fasting in a new video? Have you your views changed at all? Reply Andy Scheurer July 15, 2019 No fad been around thousands of years Reply Ahmed Toma July 16, 2019 what are enemens? XD that cracked me up. But yes M&ms used to be my guilty pleasure too haha love your videos Jeff! Reply Corwyn Warwaruk July 18, 2019 I eat one meal a day and will continue to eat one meal a day. For me it’s a lifestyle not a diet. I work out, cardio or heavy lifting, I do physically demanding jobs, what ever I do I eat one meal day and feel amazing. Give me my protein, veggies, and fats and I feel great and have energy Reply Dave Cope July 18, 2019 Love this guy man, but I just don't agree with this one. I've lost 35 pounds and have fell into a very rewarding, comfortable and easily sustainable lifestyle concerning eating habits. I've also cured my heart burn, skin problems and sleep apnea. Following his workouts and IF has literally changed my entire life. Reply Alexandru Husleag July 22, 2019 Yea, people back in the day when had a meal once every few days lost lots of muscle just because they didn't eat every few hours :))) That's not how it works. Reply Elias Nicholson July 23, 2019 Everyone in disagreement looks nothing like him and doesn't have the credentials or trains professional athletes lol. Let's listen to you guys Reply Elias Nicholson July 23, 2019 The reason people see such great results with IF is because instead of Hardee's biscuits and Bojangles you're now skipping breakfast. Obviously you're losing weight Reply Saliem Zaiem July 23, 2019 IF is a fantastic style of eating. And it is really helping me Reply william sewell July 23, 2019 Use it to "cleanse" than eat right later. It's much easier to eat 2 meals a day than 5 small ones. But I've done the 5 small ones, and that also worked. Idk, just do you. Reply Chris Pearson July 24, 2019 Fuckin awesome Reply Matthew Gonzales July 27, 2019 You say 8-9% is “more human” to maintain. Are you implying that your not of this planet? 😆 Reply Matthew Gonzales July 27, 2019 You say 8-9% is “more human” to maintain. Are you implying that your not of this planet? 😆 Reply nate phill July 28, 2019 If and long fasts have been my lifestyle for the past 2 years. Totally sustainable and the benefits are outstanding. Truly life changing Reply BLOOD RED BLOOD July 31, 2019 IF has taken me from 193.0 to 171.6 and I've easily sustained it for the last 7 months. Reply Justin Thorne August 4, 2019 I strongly disagree. Intermittent fasting isn't great and easy lifestyle choice Reply Xenta Atnex August 8, 2019 I believe that intermittent fasting would not work for a person who is shape like Jeff is but it would for someone who is obease. IF is a good way to mobilize fat as energy but if you you have a low fat percentage then I can see IF as counter productive for muscle. Reply Kris Kilpatrick August 9, 2019 Jeff – do you still feel the same way about intermittent fasting? Do you feel this way about all of the different types of IF? Like the 16/8, 20/4, 5:2, etc. I hope you do a follow-up video on this. Thank you, -Kris KilpatrickMS in Applied Exercise Science Reply Solace Creat August 12, 2019 Jeez. This was the most painful Athlean vid I've ever watched. Title is completely wrong. Doesn't even talk about IF and implications for muscle growth. Then he says IF/atkins/fad diets are only invented to make people money and shortly follows that up with "I don't need IF due to being busy. I just [SHAMELESS PLUG] drink some Athlean x Protein powder." Paraphrase. Totally fine with plugs, but not right after shitting on various nutrition plans because they only exist to make money for others. I love ya Jeff, but this was the worst Athlean video I've seen. Out of, I dunno, 200, 250. Reply Misbah Ahmed August 12, 2019 Mate you are on the juice.so its easy for you but there are people like my self who has tried every diet for 30 years .nothing work to loose the last 5 pounds of stubborn fat. Finally with intermittent fasting i m seeing result. There is the fact. Reply Vũ Đinh August 13, 2019 Intermittent fasting is not too hard to take as a lifestyle. This may be the only time I disagree with you, Jeff! Reply Steen Randa-Boldt August 13, 2019 Yo.. stop saying shit. Eggs are in no fucking way a health food. Educate yourself. Nothing healthy about eating animal products. Reply Steen Randa-Boldt August 13, 2019 "where is the protein"… are you fucking stupid. Reply Steen Randa-Boldt August 13, 2019 Intermittent fasting does NOT kill muscle. Reply Dungener August 14, 2019 Im doing 16-8 for a month now with no cheat days. Will keep u updated 😀 Also avarage fast 17h and have lost 3kg while gained some muscle (from working out ofc) Reply Carson Logue August 20, 2019 Honestly why do we listen to him about building muscle or getting big, cause this dude isn’t even big himself Reply Albi August 22, 2019 Not eating is so easy. 😀 Reply dominionn09 August 23, 2019 I think you are getting push back on “IF” because it’s not a diet…it’s a eating pattern that has very well documented health benefits. For example, I have suffered with IBS my whole life. I also have been weight lifting for many years (I’m 46) Bloating and gas have been a problem most of my life. I then realized that I was never really giving my body a break from eating. Doing the 5-6 meals a day thing most of the years training. I then started taking a 16 hour break from eating and still getting my 3000 calories. IF is not a diet fad. I do it with intention of GAINING weight, but more importantly saying healthy Reply Ted Charette August 29, 2019 how does this idiot have 8.4 million subs? dear lord clown. Reply Herb Toker August 30, 2019 Going on my third year IF and Keto . I feel so good I will never stop. Dont knock it till you try it. Jeff you are not a nutritionist, you are greeat at Physical therapy and Training but you are clueless when it comes to Nutrition. Reply Curt Walter September 3, 2019 Another video that was ahead of its time. There are many videos a couple months to a year old but this is from 2014 and still at the top of the search results. Reply Johnny Smith September 8, 2019 EN-i-mens. 😂😂😂 Reply HP September 9, 2019 The comments… the irony and arrogance it takes to actually question or even attempt to condescendingly educate someone who supposedly is far more knowledgeable, lol. Reply gschopp September 14, 2019 Fuck intermittent fasting…I do meth and work out hard and don't eat shit Reply Bui Nhat Thinh September 15, 2019 I disagree with what you said, Jeff. Tons of research and people experiences have shown that IF actually reduce hunger and by reducing hunger, those who tried IF have a better time sticking to their nutrition and live a healthy lifestyle. Reply PastaPig13 _ September 16, 2019 Intermittent fasting is not diet. It's simply not eating for a a certain time frame. Reply Dragon Dynasty Warrior September 24, 2019 lol wind up in 8 – 9% body fat range by letting your hair down. I would kill to be 12-15% Reply Jordan Wilson October 1, 2019 What if you go on a diet to get where you want then start branching out to good nutrition? Reply Taxidermy Coach October 5, 2019 Love Jeff however……you didn't answer the question "does intermittent fasting kill muscles" I would say no but would have liked your take on it. It seems to be the most natural thing to do and free. Reply TNKid 8 October 13, 2019 You really didn't talk about whether intermittent fasting causes muscle loss. Reply BlackRose October 14, 2019 Stick to lifting weights buddy, you're not a doctor, you're not a Nutrition Specialist. Every legit study on this proves that it INCREASES muscle growth.Also Fasting isn't a "Diet" Lmao. This is the way Humans have eaten for thousands of years. IF is simply not eating for 16 hours, meaning you simply don't eat after Dinner, and wait a few hours after waking up before eating…… That's it, that's all there is to it. Our ancestors never had constant access to food 24/7, it took time for them to acquire that food. We've specifically evolved to eat this way. The fucking word "BREAK-FAST", literally means to stop your Fasting. It's something so natural that it's built into our very language. Reply Wrestle Art October 14, 2019 I found the video that makes me question Jeff. Soley with regards to IF… I hope you've educated yourself the years that followed this video. If not, start with Dr. Fung and expand your knowledge. IF is literally a life saver… not only short term… for life. Reply J D October 14, 2019 I think at the end of the day, we all have different genetic predispositions. Listen to YOUR body, and don't do off someone else's predetermined schedule! Your body has its own processing rate. It's as simple as this — if you're not hungry, don't eat! Don't eat because some clock has reached a certain hour, eat because your body is telling you it's time. After that, pay attention to the quantity and ensure it's following the scientific principles in order to arrive at desired outcome. But don't worry about when! Reply FromBeToReality October 17, 2019 THUMBS UP!!!then watch! Reply TheosoTeric EsseneScene October 18, 2019 So do you think that intermittent fasting is OK for bodybuilding? 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