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By Kelly Bastone

Pack more nutrients - and flavor - into your meals with these simple makeovers

As a runner, your go-to daily fare is probably pretty healthy: pasta, lean meat, salad. But simple food swaps--yogurt instead of skim milk, olive-oil vinaigrette instead of fat-free dressing--can pack more nutrients into every bite.

"Nutrient density means foods have a high nutrient content relative to their calories," says Marisa Moore, R.D., L.D., a spokesperson for the American Dietetic Association. "They are the most efficient way for runners to fill up on essential vitamins, minerals, and carbohydrates." Making nutrient-rich foods the main focus of every meal means runners can properly fuel up for workouts without worrying about adding on pounds.

How can you tell if a food is high in nutrients? In general, the less processed it is, the more nutrients it will provide. Adding fresh fruits and vegetables is the easiest way to improve any meal, since most are low in calories but high in vitamins, minerals, and antioxidants. Certain food pairings improve a meal's overall nutritional value by "unlocking" other nutrients, says Elaine Magee, M.P.H., R.D., author of Food Synergy: Unleash Hundreds of Powerful Healing Food Combinations to Fight Disease and Live Well. When you buy packaged foods, scan the nutrition label for double-digit Daily Values for fiber, vitamins, minerals, and protein. "The goal," says Moore, "is to get the best nutrition you can every time you eat."

Preworkout Breakfast

MEAL Oatmeal with milk and a sprinkle of brown sugar

MAKEOVER Oatmeal with almonds, strawberries, and low-fat yogurt

NUTRITION BOOST "Oatmeal is a good option for runners," says Moore, because its whole-grain carbs are rich in B vitamins, which help convert proteins and sugars into energy. A recent study also showed that B vitamins may help build and repair muscle and red blood cells. Substitute low-fat or fat-free yogurt for milk: Cup for cup, yogurt delivers more protein, potassium, and calcium. Skip the brown sugar and sweeten your oatmeal with fresh or frozen strawberries, which are high in vitamin C and will boost calcium absorption from the yogurt. Add crunch with almonds, a good source of vitamin E and monounsaturated fats.

Postworkout Lunch

MEAL Turkey sandwich on a baguette with lettuce and light mayo

MAKEOVER Whole-grain wrap with turkey, spinach, tomato, and pesto

NUTRITION BOOST Whole-grain breads contain more fiber and B vitamins than white varieties--even crusty baguettes. Instead of sliced bread, choose a wrap, which makes it easier to fold in more vitamin A and K-rich spinach. Eaten with tomato and turkey, spinach completes a trio of B vitamins that's been shown to help build red blood cells and protect against heart disease. Pesto, made with olive oil, basil, and pine nuts, adds a healthy serving of monounsaturated and polyunsaturated fats. A recent study showed that when eaten with vegetables, these fats improve the absorption of beta-carotene (found in spinach) and other nutrients.