why is this important for your energylevels? well, stress and nervosity such as anxietys are in fact using up your energy faster through out the day because the body is in a fight or flight mode. And this is what we need to avoide. Then, through the day make sure you have a littel high protein snack or proteinshake to reduce cravings for sweets. This will not effect your blood glucose to much and will also not make you feel tired. Then at lunch, a small portion. dont worry you will not starve.