The good thing about eating one meal a day, is that in general, it tends to limit the amount of calories you can eat. The good thing about eating just fish or just chicken, is that in general, it tends to limit the amount of calories you can eat. The good thing about eating just Formula (miniumum 15 grams of protein, maximum 100 calories) or Bars (minimum 15 grams of protein, maximum 150 calories), is that it tends to limit the amount of calories you can eat. The good thing about eating just Greek yogurt or just Lean Cuisine or Healthy Choice, is that it tends to limit the amount of calories you can eat.