Blood sugar is the sugar in the food you eat to provide energy to your cells and circulates in your body and the excess sugar will be stored in your body. A person's physical fitness and well-being depend on whether their blood sugar level is well balanced. Well-balanced sugar levels regulate hormones, increase metabolism for weight loss, and stimulate the body to burn stored fat. Most people's blood sugars are not balanced, when you take in too much glucose it leads to high blood sugar levels and, ironically, not taking in enough sugar can lead to taking in more..