7. Cheese: Tread Carefully
"It may seem like a small, carb-free indulgence, but calories from cheese pile up quickly," says Williams. To add insult to injury, "dairy slows down the digestive process." So when confronted with a tempting block of brie, treat yourself to just a sliver. A tiny, pinkie-size sliver. The goal is to keep your total cheese consumption to about two ounces. This mini sliver of yumminess is the stay-trim ticket. Reality check: One cubic inch of brie contains nearly five grams of fat.