Wow. This is laughable.
No. It's physically impossible to lose 15.15 lbs of fat in 3 weeks.
Actually it isn't. Your body can lose a tremendous amount of fat in a short period of time if you simply create an optimal fat burning environment. Most people's fat burning environment is average to poor at best. For instance, following the way you advise people to do things by simply lowering calories will lead to a rapid decline in Leptin by Day 6(down to 50% of normal levels). Leptin is the master fat burning hormone. When leptin is high, the body burns more fat. When its low, the body burns less fat. Not to mention its effect on your thyroid, which will also decline. The thyroid is the master metabolism switch for the body, which controls how fast things run.
Here are the 4 most important factors in burning fat from a hormonal standpoint, listed in no particular order :
1) Leptin Levels
2) Thyroid Levels
3) Growth Hormone Levels
4) Lessening the time Insulin is active in the body
So the way you advise will lower both leptin and thyroid, two of the most important factors in effective fat burning, do nothing for GH levels or possibly reduce them by being in a constant caloric deficit, and increase the amount of time insulin is active in your body. All 4 of those create a worse environment for burning fat, but yet somehow you want to think this is a good thing? That is what I find laughable.
If you chained yourself to a bed ate absolutely nothing and starved yourself with no food for 3 weeks, you still wouldn't lose this much fat. And you'd probably be dead.
Of course not because by day 3 your growth hormone levels would plummet, your leptin and thyroid levels would plummet and your body would do everything it could to hold onto fat, burning muscle instead.
Like, are you just hoping no one here actually knows what they're talking about? Dumb dumb dumb.
No, I'm actually hoping some DOES know what they are talking about. Obviously that isn't you.
I didn't make this up. This is simply a modified version of a program designed by John Romaniello, an extremely well respected and sought after trainer. After running his version the first year, I didn't like some of the things in it because I felt "flat" and had lost some strength doing it, so I modified it slightly and it took care of those issues for me. For the most part 90-95% of what I am doing is outlined in his program, I lowered the fast days to 24 hours from 36 hours and use a workout program designed by my trainer rather than his workouts, but they are similar in scope and duration.
http://romanfitnesssystems.com/articles/intermittent-fasting-101/
Martin Berkhan, another extremely well respected and sought after trainer runs similar type of programs except his is more geared toward full-year useage while the modified one I use is more geared towards rapid fat loss in a short period of time.
http://www.leangains.com/
The warrior diet is another method similar to these where you eat a small meal early in the day and then eat one big meal at night.
http://www.muscleandfitness.com/nutrition/gain-mass/become-modern-day-warrior-diet-broke-all-rules
Brad Pilon's "Eat Stop Eat" is widely respected as being one of the first books to bring this type of thinking to the masses and most of these are offshoots from that, which they readily admit as they respect his work so much
http://www.eatstopeat.com/?utm_expid=7760520-27.-zWuQngQSgyD1T698Jfg7g.0&utm_referrer=https://www.google.com/
No, the vast majority of whatever weight you did lose in that 3 week period was water weight and food that was still in your stomach from binge eating.
I've lost 10lbs on the bike in an hour, but it's 97% water weight. I'm not foolish enough to say I lost 10lbs of fat/muscle, then make up random numbers for fat and muscle.
Well, considering I stay extremely well hydrated at all times, drinking at minimum a gallon of water a day, I'd have to say that is silliness to compare the two. I'm not "sweating" it out at any point, nor am I taking any type of diuretics--I don't drink coffee or alcohol. In fact making sure you are properly hydrated is a big key to any fat loss as the body burns fat much better when hydrated...think of water as the "oil" in the body's machine that keeps things running smoothly.
Its not a made up number, its based on using both SKULPT, the closest thing to a DEXA measurement you can get and Calipers, which since I have been using them for 5+ years I have gotten really good at measuring. They typically come out relatively close to each other, so its an easy way to cross-check, but the SKULPT is pretty much the gold standard of personal fat/muscle measurements.
So no other method that has been scientifically researched is as good as your method huh? Alright for funsies let's take a look at your "method",
Go read the studies. Every other method they have tried in studies leads to pretty much 50/50 fat loss/muscle loss except this way.
So... you "fast" 3 days out of the week, eat whatever you want one day, have three "normal" days (???), and you don't count calories or eat based on anything that is quantifiable? That's it?
Right. I would ask for perhaps some type of source backing your claim that this "method" is superior to anything else, if it wasn't so obvious this was a complete joke.
The source is that I used it for 4 years, any one who follows that program from John Romaniello, Ori Hofmekler(warrior diet), Martin Berkhan, or Brad Pilon has used it, and other people I have given my program to have used it, and they all have gotten good results with it.
The joke is that you are 6'0" 170 lbs trying to give advice to a guy who used to weigh 255 lbs, at one point got down to 175 lbs, and routinely sits under 10% BF in the summer and is extremely muscular, who has used himself as a personal guinea pig for the last 6 years and has tried many different ways of doing things, be it eating, workouts, supplements, etc.
I have tried pretty much everything at one point or another, including doing long bouts of steady state cardio AND what you are suggesting as a diet. What have you done? Based on your stats, not much of anything except workout your mouth and fingers on the keyboard.
Since obviously you have never actually tried this before, you are unqualified to have any opinion about it. I have tried the way you advise, along with many other methods, nearly all of them in search of the most efficient method(best results in the least amount of time). Trust me, if another method worked better, I would be using it---I have tried pretty much all of them at one point or another.
Please, no one take any advice from this guy seriously. Unbelievable.
Again, they can choose who to take advice from. The 6'0" 170 lb skeletor, or the 5'8" 185 lb beast who lives, eats and breathes this stuff. It doesn't matter to me. They are responsible for their own results, not me.