A power food is one that provides the highest amount of nutrients with the least amount of calories offering optimal health benefits. Perfect.

I know, I know. There is no such thing as perfect. But these ten power foods come pretty close. Try to incorporate each of these foods into your diet (at least) once a week.

Apples

Why?: Contain quercetin - a substance that protects brain cells from free radicals. Also, contains tons of fiber - which promotes healthy weight.

Avocados

Why?: Monounsaturated fats & fiber. You will stay satiated longer. Also contains Glutathione & Vitamin E, both prevent aging. Plus they have been shown to prevent oral cancer, breast cancer, cataracts and strokes.

Bananas

Why?: Fiber, potassium & YUM. Has been shown to increase alertness, happiness (by boosting serotonin) and maintain regularity. Also can decrease symptoms of PMS.

Beans (Black beans, Chickpeas, Kidney beans, Lentils)

Why?: Offer a combination of both fiber & protein. B vitamins, iron, magnesium & zinc. Also helps stabilize blood sugar.

Berries

Why?: Tons of antioxidants.

Greek yogurt

Why?: Higher in protein than regular yogurt, promoting a feeling of fullness. Contains 1/2 the amount of sugar & less sodium of plain yogurt.

Nuts

Why?: People who eat nuts are leaner than those who don't. As long as you don't go overboard. Portion control.

Oatmeal

Why?: Tons of soluble fiber which lowers cholesterol & also targets belly fat.

Salmon

Why?: High in Omega 3's that reduce risk of stroke & heart disease. Also increases serotonin.

Spinach

Why?: Vit A, Vit C, Vitamin K, Folate. Also contains phytochemicals & flavonoids. Low in calories, high in nutrients!

Sweet potatoes

Why?: Vitamin B6, Vit C, Vit D, iron and magnesium. Low glycemic index.