Elaine is right -- drinking a glass of water before each meal will help fill you up; it's also very important that you keep your body hydrated. If your body becomes dehydrated, you are more likely to get muscle cramps, be hungrier, more tired, etc.........I notice that some days, I don't drink enough water and I end up SOOO tired, but if I start sipping water and get rehydrated, my fatigue tends to diminish.