The 2 Week Diet System – PDF download, by Brian Flatt. Ketosis… In a word, this is the reason we are so fat, but it is also the solution to belly fat and stored fat in general. When the body can get its energy supply from currently digesting food, it avoids using stored fat. That digestion cycle takes 12 hours — so for that period there is little to no ketosis, that is, when the body is substituting stored fat as it energy source. Unfortunately, Americans tend to eat once again either before that 12 hour deadline or soon after, so that the body never really gets going with ketosis — thus the inability to reduce belly fat because we eat too frequently.
But here’s also where the solution lies, for any time past 12 hours that you don’t eat again, your body is now in full-blown ketosis mode. So if you go for, say, 16 hours from one meal to the next, you’ve just had 4 hours of fat-burning ketosis. If you do that on a regular basis — let’s say 4 or 5 times a week — you will see that belly fat finally begin to shrivel. Make it just what you do, and you are destined to be that sleek person everyone wants to be.