Make sure you eat a healthy breakfast and get some calories in you before you throw on your shorts and gym shoes. But make it light.  When we exercise, as important as it is to get some fuel in us before we hit the weights and treadmill, it is  even more important not to bog down our bodies with heavy-fast-food-like meals.  Feeling bloated during an exercise routine is terrible and can cause headaches and nausea.  For those who exercise in the morning, drinking a quick Ensure, Muscle Milk or protein shake and eating a small serving of fruit such as an apple, orange, plum or peach, will provide your body and mind with enough nutrition and energy to get in an effective workout. Other nutritious and morning-pre-workout-optimal foods  include egg whites, bananas, whole wheat bagels, oatmeal and low-fat yogurt. A moderate amount of caffeine can be beneficial too.