_ Most people are fat. More accurately, most people reading this article live in a country where most of the citizens are overweight or obese. Obesity has quickly become an uberproblem for the western world, where people acknowledge the issue yet eagerly accept the offer to add a doughnut to their coffee or fries to their burger. Despite the enormity of this epidemic the solution is ridiculously simple: eat less. “But James, I’ve tried every diet and only eat the 100-calorie packs of Oreos”. Shut. Up. It’s hard to argue the fact that if anyone consumed zero calories over the next week, they would lose a considerable amount of fat and weight. While I do not promote starvation as a healthy weight loss strategy, I do recognize that most people eat too much of the wrong foods. As a strategy for fat loss and a plethora of other benefits, I propose the simple solution of skipping breakfast. Enter, intermittent fasting.
fight club brad pitt james chalmers
You are not him. (But if you are and you’re reading my blog, this is awesome).
You are not Fight Club’s Tyler Durden. Dissimilar from Mr. Durden, you likely carry more than 6% body fat and are probably sleeping a decent amount of time each night. During these unconscious hours you are abstaining from any calorie-containing food or drink i.e. fasting. Intermittent fasting (IF), in the context I refer to it, means going an extended period without calories to reap the associated health benefits.

Specifically, I recommend an 8 hour feeding window followed by a 16 hour fast.  Within this feeding window one consumes all the day’s calories in as many or as few meals as desired, complemented by the corresponding period of calorie abstinence. This schedule is suggested by Martin Berkhan, whom I credit with my introduction to this wonderful lifestyle. As an IF example, someone with a 9-5 workday may eat their first meal at 12:00 for lunch, then a snack after a post-workday workout (read: martinis to relax after work), and conclude with their remaining calories at dinner. After 20:00, no calories are to be consumed until 12:00 the next day. This strategy is simple, and akin to my previous posts, I believe simple strategies yield the best results. The best diet for body recomposition is the diet which is easiest to adhere to. Most of dieting depends on the adherence level of the participant, and as such many diet strategies fail due to overly complicated directions. Simple is better.
_ Intermittent fasting is badass. The general consensus about fasting is that it is hard; bullshit. In actuality I have found it to be surprisingly easy and liberating, as IF has freed me from the necessity of feeding every few hours. Exerting less effort and appearing to command more willpower than someone else while attaining equal or better results is something that both the type-A and type-B part of my personality can enjoy. On top of being badass, the fasted version of you will also look better naked as intermittent fasting improves fat loss. The same study also shows that fasting increases blood sugar control which is good news for Santa and the 200 million other diabetics around the globe. While being ripped is nice, it’s going to be even better with all the extra muscle gains IF will bring you through increasing growth hormone levels, which promotes lean muscle mass. Muscular and ripped is good, skinny-fat is not.

When trying to validate food choices, it often helps to consider whether what you eat and how you do it fits in with human evolution. Early Homo sapiens most likely ate meat and vegetables, not Curly Wurly’s and Slim Jims (or whatever the kids are eating these days). Also, it is likely that early humans often went extended periods without food, which makes sense considering the lack of prehistoric refrigerators and 24 hr McDonald’s drive-thru. Of course, not everything that the early humans did not possess is bad for you, whey protein and antiseptics come to mind, just be sure to think before you eat.
santa james chalmers
No Thanks!
_ If the internet and its memes have taught us anything, it’s that haters gonna hate. I can appreciate the skepticism surrounding intermittent fasting as it is still far from main stream, but that won’t stop me from refuting all the skeptics with a few awesome hyperlinks. One of the supposed benefits of frequent eating is a higher metabolism. This study is one of several to conclude that metabolic rate increases with short term fasting while this other gem of a read shows that meal frequency (e.g. 1 meal vs 5 meals per day) does not affect energy metabolism. Fasting is also criticized for promoting muscle catabolism (a.k.a. not what you want) while frequent eating supposedly contributes to an anabolic state (a.k.a. awesome). Not surprisingly, this again falls to the scientific method as elevated GH levels during fasting help to conserve muscle mass.

Since you are now eating in a smaller window like a 500 lb lion and not grazing like a frail and soon to be devoured antelope, it is likely that your fewer meals will be larger. The final myth to be debunked is that the body can only assimilate 30g of protein per meal. Trying to understand how some of these facts stick around can be more difficult than finding Waldo. An Italian study shows that after eating a couple slices of pizza (of all things), BCAAs and N-BCAAs are still entering the blood stream more than 5 hours later. Eating more just means that digestion will take longer, not that precious muscle-building protein disappears into some bro-hating abyss. All-you-can-eat buffets just became more popular.
Russian Marine james chalmers
IF can’t make you this awesome, but it will get you as close as you’re going to get.
_ Intermittent fasting is so awesome and the benefits so vast for such a simple lifestyle change, it is difficult for me to end this post here. If my readers attention spans weren’t so shortened from dubstep music and Angry Birds, I would love to elaborate on the benefits that come from putting the fork down every once in a while. Martin Berkhan’s site and Dr. John Berardi’s new e-book are generous sources of ass kicking and bubblegum chewing intermittent fasting knowledge for those interested in learning more. For those of you not considering intermittent fasting, maybe you should have a coffee to wake yourselves up and know that I will come find you in your sleep. Shameless self-promotion, James Chalmers approves.
 


Comments

James
11/22/2011 18:15

Check out this awesome comment from Alex Choi on Facebook:

In my humble opinion, people would be better off focussing on their actual diet as an overall lifestyle change as opposed to "dieting" (i.e. in the common understanding of regimenting one's eating schedule). By that I mean making the concerted effort to eat primarily meats/vegetables/fruits/nuts throughout the day whilst engaging in physical activity (the general hubbub of weightloss but nonetheless true)

Here's my problem with intermittent fasting (and every other fat, trends and hocom tricks in the dieting and weight loss scheme).
You assume that the overweight/obese majority engages in any kind of active lifestyle that would be conducive to IF being an appropriate vehicle for fat loss. While early Homo Sapien and lions may (have) engage(d) in IF, their lives were/are almost completely engulfed in the physical exertion of the hunt. Meanwhile, the average individual might engage in an hour of moderate activity, which is to say, a mere fraction of that of the aforementioned. If I understand correctly, IF is predicated on fatty acid oxidation as a primary source of energy. Yet as most live generally sedentary lifestyles, those engaging in the act of "quick fasting" will still be long in the process of metabolizing glycogen reserves in the liver before transitioning to fat oxidation, as such, either reducing the effectiveness of or completely nullifying the purpose of fasting. This is further confounded by the reccomendation to eat the majority of one's calories in one meal. Unlike protein, excess glucose after intial metablization is stored as fat. As such, we'd logically see the opposite of the desired fat-loss effect

At last, fasting is inherently an act of mental fortitude, it is not a simple lifestyle change as you espouse. For instance, all religious examples of fasting are demonstrations of strength in the face of an adversity - it's not something you just do on a Tuesday.

I also have an issue with anecdotal evidence derived from cherry-picked articles but that's another note altogether.

Reply
James
11/22/2011 18:16

This was my response:

Choi, I definitely agree with your point that people are going to be much better eating 3000 nutrient dense calories over 6 meals then eating 3000 calories worth of Mars bars in an 8 hour feeding window. What you are eating is much more important than how you eat it. All things the same though, I think IF can give people an edge. One counterpoint to your glucose argument is such. Glucose is metabolized relatively quickly and much of it is stored as muscle glycogen first and foremost. Any remaining glucose can be stored as fat, however it is 10 times less efficient for your body to store glucose in fat cells compared to fatty acids. . Fat cells love fat, and as such, if we can keep the body running off of fatty acids, then less total calories will end up being converted into fat. Fasting increases fatty acid oxidation and suppresses glucose oxidation. Also, do not forget to factor in the positive effects for metabolic rate and growth hormone that have been demonstrated, growth hormone being awesome for body composition. I believe that putting it all together, IF can be beneficial for most and that is why I support it but everyone is left to make their own conclusions.

Furthermore, I can understand your frustration with the evidence used, however keep in mind that, for example, there are still studies that conclude that climate change is a complete fabrication. My job is to critique the studies and only select the ones that I think display an adequate level of objectivity and were carried out in an acceptable way. Obviously I'm going to use references that support what I'm presenting, just as in any scientific literature. There are still very few studies that have looked intermittent fasting and if in the future science decides that IF leads to a chubby and weak populace then I will be the first to concede.

Also, fasting for 16 hours is easier than you think. Give it a try. Thanks for actually reading the article critically and presenting some quality ideas of your own.

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James
11/22/2011 20:45

For those interested, more awesome discussion from Alex on Facebook:

The study on GH levels in a fasted state is very interesting but it doesn't state outright that GH levels are elevated enough to prevent catabolism, only reduce muscle protein breakdown. With that said, it's also somewhat ambiguous as to what exactly constitutes fasting. The GH study used a 40 hour fasting period as the standard measure, so it can't necessarily be said that the same results can be experienced in a duration of time that is much less than half. While I'm not discounting any of the effects fasting may have on the body in terms of anabolic gains, I'm considering whether the changes experienced are really worthwhile as the fluctations in levels may be neglible at best.

Alas, I can concede that a sudden change in lifestyle can jumpstart an otherwise stagnant progression in an active individual or athlete. Something like IF might in fact work but only if utilized as a specialized cycle, much like a cycle of a particular training program could produce results. Having previously dedicated myself to heavily regimented eating styles, I personally cannot bear the strain of such for vanity. However I still stand firm behind the notion that any sedentary individuals hoping to lose fat by doing nothing but intermittent fasting is on a path to failure and regression. Just as how a keto diet is only truly effective with an accompanying training regime, it is more than plausible to suggest that IF is the same.

All in all, I'd certainly like to see you write something on training methodology, saturated fats and anabolism, macronutrient distribution or a perspective on a particular micronutrient or amino acid.

It's not often you get to have a critical discussion about anything remotely related to the bro-realm of gym at our age.

Reply
James
11/22/2011 20:46

My response:

All very good points, I too think that an accompanying training program (mostly involving resistance training) is key for seeing any substantial results. In fact, I very much would have liked to elaborate on pairing training with IF but thought the post was long enough as is. That may have to be a future post and I think that I will eventually cover most of your suggested topics; there are just too many awesome things to write about.

Also, I think a lot of the benefits of IF are derived from behavioral changes and diet adherence, you mentioned that adhering to highly specialised and restrictive programs has been tough for you in the past. I would agree. From my viewpoint, having a clearly defined fasting window is going to cause more people to eat less than having highly precise calorie limits, etc. on meals would have, especially for those people who do not have a passion for nutrition/fitness and just want to lose some fat before beach season, for example. I'd definitely recommend checking out the two links at the bottom of the post for suggested further reading, there's certainly enough there for you to sink your teeth into.

Reply
Megan Chalmers
11/22/2011 20:47

I knew this was going to be my favourite article so far after I read the first sentence. Keep it up bro.

Reply
James
11/26/2011 21:54

Thanks Megan, I appreciate the feedback.

Reply
Paul
02/27/2012 05:46

Good job man, thank you so much for sharing this article, I've learned alot from it!

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James
02/27/2012 16:46

Great to hear Paul. Thanks for checking it out.

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Adam
07/12/2012 13:24

Great blog, I like how you get straight to business and avoid the BS. I have been doing some IF research myself and wanted to know if you found anywhere what the effects of IF are for weight loss and no exercise regime. Basically, does IF have to be paired with exercise to be effective for weight loss?

Thanks

Reply
James
07/12/2012 13:49

Thanks for checking it out Adam. Most of the studies referenced here examine IF independent of exercise. Based on that, I think it is safe to say that IF is beneficial with or without exercise.

I see exercise amplifying the effects of IF, as it would with any diet.
For example, IF combined with exercise has proven added benefits such as improved insulin sensitivity (http://bit.ly/bTb58i).

Intermittent fasting is awesome either way, exercise just makes it that much better.

Reply
Adam
07/12/2012 14:14

Thanks for the quick response! One last question for you. Assuming I'm doing the 24 hour IF program twice a week, during my eating windows/non-fasting days should I be taking in calories equal to my normal BMR or should I keep a calorie deficit? Right now my BMR is about 2400 calories..so by eating that amount on non fast days and cramming in those calories during my eating windows will that be good for rapid weight loss? I feel like I have to force myself to eat that many calories in such a short window of time...would lowering my calorie intake be safe/more effective?

Thanks again.

Reply
Adam
07/12/2012 14:14

Thanks for the quick response! One last question for you. Assuming I'm doing the 24 hour IF program twice a week, during my eating windows/non-fasting days should I be taking in calories equal to my normal BMR or should I keep a calorie deficit? Right now my BMR is about 2400 calories..so by eating that amount on non fast days and cramming in those calories during my eating windows will that be good for rapid weight loss? I feel like I have to force myself to eat that many calories in such a short window of time...would lowering my calorie intake be safe/more effective?

Thanks again.

Reply
James
07/12/2012 16:19

The protocol I normally following consists of a daily 16 hour eating window and is the only method I can speak to from experience.

For 2 separate, 24 hour fasts each week, however, I would recommend keeping your non-fasting days at BMR. This is in line with Brad Pilon's Eat Stop Eat program (http://bit.ly/3JyUyH), which is the best method for full 24 hour fasts, in my opinion.

I would still recommend a daily 16 hour fast (Leangains style), as I find the full 24 hour fasts harder to sustain.

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