The second concept I coined is called “diet confusion.” And I name it after the similar concept in weight lifting called muscle confusion. The idea behind diet confusion is, you have to keep your body off-kilter. So by changing the type of foods that you eat, the frequency of the foods that you eat, you can keep your metabolism revved up. Instead of eating the same food all the time and your body gets adjusted to that same food and your metabolism no longer is challenged. Those two principles are really the driving principles of Shred and why people are finding such success.
Here's something else most people probably don't know: Fidgeting is good for you. It's considered a nonexercise physical activity, and it's an important way to burn energy. You get more health benefits if, in addition to exercising, you are a more fidgety, more active person the rest of the day. This means gesturing while you're talking, tapping your foot, just moving around.