20 Fittest Foods

We count down the absolute best foods to pile on your plate.

18) Quinoa
318 calories per half cup
Eat 2-3 servings per week
Chances are you may not be familiar with this exotic whole grain grown in the Andes mountains. But you should be. It has a light, mild flavor-making it ideal for guys who hate other whole grains. Even better, it's higher in protein than any other grain around, and packs a hefty dose of heart-healthy. unsaturated fats. "Quinoa is also a great source of fiber and B vitamins," says Christopher Mohr, Ph.D., R.D. a professor of nutrition at the University of Louisville.

17) Black Beans
227 calories per cup
Eat 2 servings per week
Tiny as they are, beans can help you feel energized and fuller longer than almost anything else you can eat. The reason is twofold: They're incredibly high in fiber, which swells in your stomach and promotes a feeling of fullness. And, they're stuffed with a highly complex form of carbohydrate that can take your body a long while to convert into energy. Like meat, they're also packed with protein. But unlike meat, they've got no saturated fats. "Beans of all types are always high on most nutritionists' lists," says Chicago-based nutritionist Jennifer R. Bathgate, R.D. So why'd our experts pick the black variety? Easy. Ounce for ounce, they have more fiber per serving than any other member of the legume family.

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