Bryan Haycock is an Exercise Physiologist and science writer for the health and fitness industry. In this 8 part video series, he explains the physiological principles behind how your body stores the fuel you eat, how it releases your stored body fat, and how the different types of diets help you accomplish fat loss. When it comes down to it, there are really only 4 types of diets, and once you understand the principles of how your body works, you can design a diet that works best for your lifestyle. Find more great fitness info from Bryan Haycock at
In part 6, Bryan explains how portion control diets are an excellent alternative for people that don't want to figure the exact macronutrient content of all their meals. He then explains the issues with extreme forms of portion control dieting known as crash dieting.