It may sound counter intuitive but consuming two 500-calorie lunches four hours apart can actually help you cut your overall calorie intake for the day. (Try having one at noon and another at 4 p.m.) “The purpose of this second lunch is to ruin your appetite so you’re not every hungry at night time, “explains Nancy Clark, M.S., R.D. a sports nutritionist  in private practice at Healthworks Fitness Centre in Chesnut Hill, Mass., and author of Nancy Clark’s Sport Nutrition Guidebook (Human Kenetics, 2003). “This way, you do the majority of your eating during the day, when you’re most active, and allow yourself to lose weight at night when you’re sleeping.”