Sneaky Little Slim-Down Trick: "Try the 3-hour rule"

The secret to losing weight comes down to keeping your metabolism alive and active," according to fitness guru Jorge Cruise, author of "The 3-Hour Diet." How do you do that? By eating every 3 hours, give or take 10 to 20 minutes, he says, which translates to three moderate meals with three snacks (100 calories each) between meals.