A late-night meal can spell trouble for your weight loss plan. It may raise your body temperature, blood sugar, and insulin, which makes it harder for you to burn fat. Try to eat dinner at least three hours before you go to sleep. Also, be careful about snacking after supper. You take in more calories than you realize when you nibble while you watch TV or use the computer. You may also be tempted to eat unhealthy foods like ice cream or potato chips.