An important mineral used by the body for many functions, to include building strong bones. Calcium is abundant in dairy products. Moooow!
The straightening, at a joint, of two body parts. Extension lengthens body parts away from each other. Muscular contraction causes extension.
The bending, at a joint, of two body parts. Flexion brings two body parts closer together. Muscular contraction causes flexion.
A muscle group that is located at the back of your thigh. There are three muscles that make up the hamstrings. These muscles bend(flex
ion) the knee and also extend the hip. Keep these important muscles long and strong.
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