Like "How high is your blood sugar. Do you test after eating. Most people’s blood sugar will peak at about 1 hour after eating. If your blood sugar is going above 200 a lot it will make you tried and weak. High blood sugar is hard on the body. If your blood sugar goes above a certain number you end up peeing a lot of what you eat. Your body will convert what you eat to glucose and if your blood sugar goes to high you end up peeing all the glucose you need for energy. Leaving you weak and tried. "