Drink a cup of coffee and then take a 20 minute nap. I know, doesn't sound like it would work. But the fact is that at the end of a 20 minute nap the caffeine will kick in and you will feel more alert.To eat less, eat more. If you grab a snack of cookies or pretzels, even the 100 calorie ones, it will probably make you hungrier. The small amount of...