Here is a meal by meal guide to eating for energy and managing your mood with food.

Breakfast

Eating a good breakfast boosts your concentration and revs your energy, particularly in the morning when you may need it most.

You can help keep your blood sugar on an even keel with complex carbohydrates. Avoid refined carbohydrates, such as white bread and white sugar. These have a high glycemic index, which can cause spikes and dips in your blood sugar levels.

The right complex carbohydrates provide your brain and muscles with the steady flow of the energy they need. Grains are great sources of B vitamins, which aid in the metabolic production of energy. Natural whole grain breads and cereals are good carbohydrate choices for breakfast.

For the best breakfast, add a lowfat protein, such as yogurt, cottage cheese, or skim milk, and watch your fat intake as well as your meat consumption (since meat takes more energy to digest).

Mid morning snack

Turns out, snacking may not be such a bad idea. Eating every few hours helps your body use nutrients more efficiently. It stimulates your metabolism, keeps your blood sugar levels steady, reduces stress on your digestive system, and decreases hunger, which means you will be less likely to overeat when mealtime finally rolls around.

If you are craving carbs, which many of us do at this time of day, choose whole grain bread, cereal, or fruit.

Fruits and vegetables deliver a lowfat, high fiber alternative to the vending machine choices. Raw carrots and sugar snap peas, for example, provide a crisp, satisfying crunch and will not zap your energy. Challenge yourself to eat at least five servings of fruits and vegetables each day.

For maximum energy throughout the day, avoid foods that are laden with simple sugars, such as cookies, pastries, candy bars, and sodas, which can bring on erratic blood sugar levels.

Instead, try some lean protein (lowfat yogurt, cottage cheese or lean meat) to help tide you over until lunch.

Lunch

At midday, go light. Because a hefty helping of carbohydrates can increase the amount of seratonin in the brain and cause that sleepy feeling, focus on lowfat protein.

Protein can actually raise energy levels by increasing brain chemicals called catecholamines. Eat a lunch of lowfat cheese, fish, lean meat, poultry, or tofu.

Mid afternoon snack

Choose something that will keep you satisfied until dinner. A little bit of fat is fine. It gives those carbohydrates and proteins some staying power. Try a bit of all natural peanut butter and a few crackers, for example.

Before your workout

Carbohydrates are fastest to digest and pack quick energy. Add protein for staying power, but stay away from fats. They can make you cramp.

Dinner

The agenda for the evening can dictate what you will eat for dinner. Need to stay on overdrive for a couple of hours? Choose lowfat proteins. If you are in relax mode, indulge a little.

Whatever is on the menu, remember the Pie Test. Envision your plate as a pie. Seventy five percent of the pie should be filled with fruits, vegetables, and grains and 25 percent with other foods, such as diary products and meat.

Before bed

Before turning in, a carbohydrate rich snack can supply seratonin to help you fall asleep. But go easy. Too much food can reduce the quality of your sleep.