"Intense physical training can increase the risk of deficiencies of key minerals and trace elements—namely, zinc and magnesium. These zinc and magnesium losses can have a direct, negative effect on strength and endurance. ZMA™, a novel zinc, magnesium, and Vitamin B6 patented formula is made up of precise forms and amounts to help increase anabolic hormones and strength in athletes. Because of its documented effectiveness for raising testosterone levels, this supplement is used by hundreds of athletes as a safe, natural alternative to pro-hormones."