ZMA

ZMA is a vitamin complex of zinc, magnesium and vitamin B6. An increase in exercise can lead to the loss of vitamins and minerals making it particularly important for bodybuilding due to the blood sugar level rises and urination increases, increasing the loss of magnesium, zinc, B12, B6, folic acid, and many other nutrients.

Basically ZMA is a supplement to replenish vitamins. In some studies ZMA helped overall strength and has raised testosterone, which is vital to muscle formation. I don't take ZMA, because I eat a varied diet with many fruits and vegetables. Like - spinach, milk, blueberries, strawberries, oranges, grapefruits, broccoli, fruit juices not from concentrate without added sugars, soymilk, and lean meats. Eating a varied diet and supplementing with a multi-vitamin powder/mix helps ensure your body is at its peak ability to build the muscle that you deserve.