Calcium is the most abundant mineral in the body, and without enough calcium from foods, you just can't get enough to promote strong bones and teeth. Teenage calcium intake is crucial, because nearly half of your skeleton is formed during your teens! Bulk up your bones now--both for upright posture and strong bones when you're older, but also for health and energy today.

Get your calcium by drinking a glass of milk or fortified soy or rice milk with meals, and choose yogurt or pudding for snacks.

Vitamin D works hand in hand with calcium to build strong bones, plus it's crucial for your mood and overall good health. Luckily, all milk and most soy milks are fortified with vitamin D.