The key is to understand how many
calories are in that item and how to adjust the rest of what you eat. A
diet that has lots of fresh veggies and appropriate amounts of lean protein, dairy, fruits and grains is fine.
3. Sit ups and exercises like those tone muscles, but don't burn very many calories. Aerobic or cardio exercises (like running, biking, playing soccer, or taking a dance class) burn calories. If you want to burn fat, you need to do some form of cardio exercise every day.