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 5, Bryan explains the benefits and issues with the popular low carb diet. He elaborates on why people commonly experience feelings of lethargy and difficulty focusing during the early phases of a low carb diet and some common mistakes people make as they progress through this type of diet.