That's Fit

We all know the foods that help us pack on the pounds. It's time to focus on those with the power to help us drop a few. Check out these four.

Walnuts
They're high in calories but have lots of protein, healthy fats, and omega-3 fatty acids which will keep you feeling full. They can also help lower cholesterol. Don't go overboard but try 10-12 walnuts for a mid-afternoon snack. Or add a few on top of your salad at lunch.

Whole Grain Cereal
This high-in-fiber food takes longer to digest and keeps you feeling full longer. Oatmeal, also a cholesterol-lowering food, does the same.

Watermelon
The water in this fruit -- try lettuce, cantaloupe, and cucumbers too -- will fill you up without a lot of calories. The vitamins and antioxidants in this treat will also boost your immune system.

Green Tea
Green tea can help you lose weight because of compounds called catechins which increase metabolism and help your body burn fat more quickly. Forget the milk and sugar and this tea has no calories.

Check out this AOL Body site for more diet basics.