Intermittent Fasting (IF) thread

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  • Jonesy
    All Star
    • Feb 2003
    • 5382

    #1

    Intermittent Fasting (IF) thread

    So a fair few of us in the weight loss thread have been using this method very successfully for a while now and I thought I'd start a thread on it for those that don't know much about it.

    The basic "diet" is that you fast for 16 hours and eat your calories in an 8 hour feeding window. Some people extend the fast out to longer and that is fine. For me that means I eat from lunch around 12noon and finishing my meals by 8pm that night then skip b'fast the next day and eat my first meal at 12noon again the next day.

    IF is based on the following principles:

    1. Eating multiple times per day does not "stoke the metabolic fire". Your body takes 24-48 hours roughly to properly digest and use food you eat so there is really very little difference between eating 10, 6 or even 2 meals in a day.

    2. Fat loss is calories in vs calories out. If your body needs 2500cals per day to maintain and you eat 2000 you'll lose weight. If you eat 3000 per day you'll gain, simple maths.

    3. Not eating for a while does not put your body into "starvation mode" or slow your metabolism: Numerous scientific studies show the earliest evidence for lowered metabolic rate in response to fasting occurred after 60 hours (-8% in resting metabolic rate). Other studies show metabolic rate is not impacted until 72-96 hours have passed. In fact the complete opposite is true in that your metabolism actually speeds up when fasting hits 16-24 hours and growth hormones are increased.

    4. Most of the known 'facts' behind fat loss and bodybuilding are simply false and not backed by any credible science and are mostly created by the supplement companies who makes billions of dollars each year off these myth's.

    This is a breakdown of the overall diet: http://www.leangains.com/2008/06/sur...-fat-loss.html

    and a link to the lean gains website www.leangains.com

    Now I'm first to admit this diet isn't for everybody but honestly this is the easiest most sustained fat loss technique I have ever used. I never even get hungry during the fast's any more so it's easy to adhere to and allows me to have a nice big dinner with the family every night and still be shedding fat. I've personally lost 35lbs doing this and I see myself eating like this for the rest of my life.

    Any questions please feel free to fire away and any of you other guys who have been using it feel free to post up how it has been working for you.
  • rspencer86
    MIB Crew
    • Sep 2004
    • 8806

    #2
    Re: Intermittent Fasting (IF) thread

    Thanks Jonesy. I am starting to feel some of the ill effects of being overweight (I'm 205 lbs now, probably need to be down around 175-180) and am looking to get back to being healthy.

    I'm going to read the links you provided, but do you have any personal advice on foods to eat or exercise plans you do?
    Ryan Spencer

    University of Missouri '09
    Twitter: @RyanASpencer

    Royals / Chiefs / Kings / Mizzou / Sporting KC


    PSN: MizzouTigerrr
    XBox: MizzouRhino

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    • Jonesy
      All Star
      • Feb 2003
      • 5382

      #3
      Re: Intermittent Fasting (IF) thread

      I just try to keep my protein high (around 1 gram for every lb of bodyweight), focus on healthy whole food where possible and I like to do a alternating weight lifting / cardio program with one day off per week. 3 days of weights, 3 days of cardio then I have sunday off completely.

      I'm 197lbs at the moment (5'11) and I still want to drop a little more fat to hopefully get down to around the same weight as your goal (180 and very lean is my goal). I was around 235 after Christmas and it's been pretty easy to get to this weight so I'm going to keep on truckin'.

      I personally don't count calories any more as I did for ages and got pretty good and judging my cals but i generally try to get around 1800-2000 cals per day.

      Comment

      • iAM-IncReDiBLe-
        Next Miami Great
        • Dec 2008
        • 4285

        #4
        Re: Intermittent Fasting (IF) thread

        Ok so basically I don't eat until noon and I can't eat after 8pm? If that's the case I think I can do that. This is an every day thing? Am I allowed to drink water after 8pm or I can't have anything? Sorry for all the questions.

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        • Jonesy
          All Star
          • Feb 2003
          • 5382

          #5
          Re: Intermittent Fasting (IF) thread

          yep anything that is 0 calories like water, tea or coffee with something like splenda or diet soft drinks like diet coke etc.

          Yep that's it stop by 8pm and start again at lunch the next day.

          You might be hungry for the first few days and it quickly passes and I get really happy and energetic during my fasts now, great for getting work done in the morning.

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          • iAM-IncReDiBLe-
            Next Miami Great
            • Dec 2008
            • 4285

            #6
            Re: Intermittent Fasting (IF) thread

            Ah ok sounds simple enough. Thanks for the response, ima start this tomorrow at noon an will keep you guys updated. I currently weight 182 pounds an I'm 5'8. I don't have a set goal but I do want to lose the gut I have. I use to be really over weight but I made some lifestyle changes an now I'm in good shape. Its just ridiculously hard for me to lose my gut lol. People would look at me an never think I have one so hopefully this will help me lose it.

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            • Jonesy
              All Star
              • Feb 2003
              • 5382

              #7
              Re: Intermittent Fasting (IF) thread

              GL with it man.

              There is a good article on leangains about getting rid of stubborn fat which is often around the belly for us dudes.



              A great thing about this diet is the lack of restriction. There's really nothing off limits per say as long as you are getting in a decent amount of protein. I live by the 90/10 rule that most of the time i eat what is considering traditionally 'healthy' foods like chicken breast, veges etc but there is still room for things like ice cream and pizza a few times per week and you can still reach your fat loss goals unless you go stupid with it.

              Like when I know i have a big family celebration dinner or BBQ or something i'll just lengthen the fast and have a small meal in the afternoon then I can have a huge meal with the family and even a few beers or a glass of wine and i'll still be under my cal goals for day so no damage is done.

              Add in some daily strenuous exercise and the number of cals you can eat in the evening often feels like a feast and you are still losing fat.

              Comment

              • ryan36
                7 dirty words...
                • Feb 2003
                • 10139

                #8
                Re: Intermittent Fasting (IF) thread

                I'm skeptical all the evidence comes from the lean gains website.

                Comment

                • UNC_Pete
                  MVP
                  • Jun 2005
                  • 2487

                  #9
                  Re: Intermittent Fasting (IF) thread

                  There are multiple windows out there. I have been doing this for a few months and I am down 40 pounds. Now, I was very overweight and still am but this has been the best "diet" I have tried. I can't believ this time last year I was 360 and now I am 293..

                  I do the fast-5 which is 19 fasted and 5 for meals. I usually have a small meal to break the fast and then have a big meal and maybe a snack. My normal eating window is 3:30 - 8:30.

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                  • Redemption
                    Banned
                    • Feb 2011
                    • 136

                    #10
                    Re: Intermittent Fasting (IF) thread

                    I am an IF believer!

                    For me, I don't do the 16 hour fast 8 hour eating window everyday (somedays I do, somedays I don't), but I will take 1 day a week where I fast for 24+ hours. 6 days a week I eat pretty much exactly what I always eat, an 1 day a week I simply wont eat. Sometimes that means eating dinner one day at 8 PM and then not eating again until dinner the next day, and sometimes that means just going the whole day and not eating, and maybe not having a meal until lunchtime the next day (36+ hours fasting).

                    Either way, it might be a bit difficult the first few times you do it, but for me personally, it has actually become very easy. Theres a point where you're fasting that you just no longer feel the urge to eat. Once I go 24 hours fasting, that second day is usually really easy if I choose to continue the fast. And then when I do eat, if its something greesy and fatty I actually feel crappy afterwards. When breaking a fast, I actually enjoy healthy food more than junk, which is just an added bonus.

                    And for those wondering, I've gone from about 210 to 165 in the year I've been doing this (with minimal working out the last 6 months... and eating all my normal food [including desserts and beer too often lol] 6 days a week). If I ever get some time to get back into my workout routine, I think the results would be fantastic.

                    Comment

                    • Jonesy
                      All Star
                      • Feb 2003
                      • 5382

                      #11
                      Re: Intermittent Fasting (IF) thread

                      Originally posted by ryan36
                      I'm skeptical all the evidence comes from the lean gains website.
                      That's fair enough but the evidence actually comes from scientific studies posted in numerous journals etc and the website collates it. There are also numerous websites dedicated to it now and there is a few 3000+ reply threads dedicated to it on bodybuilding.com.

                      If you want go to pubmed (http://www.ncbi.nlm.nih.gov/pubmed) and type in "intermittent fasting" or "intermittent fasting weight loss" and see what you come up with.

                      The dude from leangains.com doesn't even sell anything (other than if people want to make donations or because of the traffic the site generates) as he gives most of his information away for free and is booked years in advance for taking on personal training client's. I have heard some talk of an IF book being released but it's never come out.

                      I'm a pretty skeptical dude when it comes to lots of thing diet and exercise related but I really feel this is the real deal.

                      So Redemption you are pretty much following the Eat Stop Eat protocol where he suggest 1 or 2 24 hour fasts a week it seems. My buddy has done that is now down to a ripped 8% bodyfat after a few months (he was a beast to begin with but carrying too much fat but now he's crazy lean).

                      Comment

                      • Redemption
                        Banned
                        • Feb 2011
                        • 136

                        #12
                        Re: Intermittent Fasting (IF) thread

                        yep, that is pretty much what I'm doing. Although I mix in daily 16 hour fasts at times too... I'm not really a breakfast person, so I'll often find myself eating between like 1-9 during the day. It's not even really a concious thing as much as it is just my lifestyle... I don't do it everyday of the week, so overall I'd say I do a bit of a mashup between eat-stop-eat and the 16 hour daily fasts you do.

                        Either way, in the 6+ months I've now not had much time to work out (I play soccer one day a week and get to the gym on average one other day) I've still managed to actually continue to lean down. And this is despite what I'd consider an average diet (and by that I mean I don't eat particularly healthy lol).

                        It's not ideal, but with work and finishing up my degree, I simply haven't had time to "get in shape"... luckily, intermittent fasting has been an easy way to maintain during this busy time. And I don't see myself stopping anytime soon (frankly, it isn't a "diet" at this point because it is so easy... it is most definitely a lifestyle). The fact that I've actually leaned down while doing nothing really but IF has been great (I am essentially living the same exact lifestyle as I did when I was 210 and gaining last year, except now I'm 165-170... the only difference at the moment is the addition of IF), and I look forward to when I can combine intermittent fasting with a legit workout regimen.

                        To anyone that doesn't think they have the time to lose weight, or simply isn't ready to make a committment like that (or for that matter, to anyone who is currently trying to get in shape and lose weight but is struggling), I'd say give intermittent fasting a shot. Whether it is 16 hours of fasting a day, or 24+ hours once a week, give it a shot. It is so easy to do and makes you feel so much better, why not try it out? And the committment is minimal. If you have just a little self control to overcome the initial hunger, you might just find that when you begin fasting you actually lose the urge to eat (and when you do decide to eat, you actually crave healthier food and not the usual greasy/fatty food). Give it a shot would be my best advice lol. Even if you eat the same crap you eat everyday 6 days a week, and fast 1, you may be surprised by the results (and maybe just maybe it motivates you to improve even more).
                        Last edited by Redemption; 04-28-2011, 12:58 AM.

                        Comment

                        • Jonesy
                          All Star
                          • Feb 2003
                          • 5382

                          #13
                          Re: Intermittent Fasting (IF) thread

                          Originally posted by Redemption
                          you might just find that when you begin fasting you actually lose the urge to eat (and when you do decide to eat, you actually crave healthier food and not the usual greasy/fatty food).
                          That is so true and I really have no idea why it's like that. You would think after fasting for that long you would be really craving a big greasy burger and fries but for some reason it doesn't seem to normally be like that for me either.

                          I agree that people should just give it a shot if they want to lose fat because it's not that hard once you get used to it and the benefits are obvious.

                          A few other benefits I have personally noticed:

                          * I also feel really alert during my fast and if you combine a coffee with splenda or a few diet cokes man I feel like I could run the Boston marathon i have that much energy.

                          * I sleep like a baby at night after my big dinner. Seriously I was bordering on becoming an insomniac a few years back and I couldn't get my mind to stop racing and get to sleep but since doing IF I sleep so well it's crazy.

                          * my skin is much better.

                          * I get fuller quicker. I guess the fasting has shrunken my stomach because I now can get full on less food than I used too.

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                          • Redemption
                            Banned
                            • Feb 2011
                            • 136

                            #14
                            Re: Intermittent Fasting (IF) thread

                            in regards to not craving crappy food, it may just be that originally I did crave "crap" after a fast, but it just doesn't settle well after fasting for a while. I'd fast, then eat some unhealthy food, and I really would just feel crappy (for lack of a better word) afterwards. I'd just feel gross.

                            So it may just be that I now don't crave those greasy/fatty foods because they are so unsatisfying and disgusting after I've been fasting. Now, that isn't to say I don't love that kind of food. On a normal day I'm all over those lol. It's just that after my fast it really is the last thing I want to eat. Almost like it is too much of a shock to the system and makes me feel like a gross blob. I'd rather just eat some fruits, maybe a nice lean cut of meat, and I'm good and satisfied. Just one more benefit for me personally doing IF, I fast for one day and only feel the need to eat quality food the next day or two.

                            Comment

                            • UNC_Pete
                              MVP
                              • Jun 2005
                              • 2487

                              #15
                              Re: Intermittent Fasting (IF) thread

                              I don't crave fast food or greasy foods after I fast normally but if I smell pizza after my fast I'm having a slice or two!

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