If you skip breakfast, your body goes into starvation mode. The reason? Having an empty stomach sends a message to your cells to conserve energy in case more food doesn't arrive. To kick-start your metabolism first thing and for the day ahead, it's best to eat within two hours of waking up.
Take Charge: To get the most calorie-burning benefits, try 1 cup oatmeal cooked with low-fat milk, topped with 1 ounce chopped nuts and ½ cup to 1 cup fresh or frozen berries.