MUSCLE GAIN & PROTECTION: clinically proven to support lean muscle growth, aid in muscle protection and repair and improve post workout recovery times SUPPORTS AEROBIC FITNESS, power output and resistance to fatigue by raising Vo2 max and ATP. Suitable both as a pre-workout, post-workout, or as a daily supplement for men and women SUPPORTS JOINT FLEXIBILITY & BONE STRENGTH: stimulates collagen synthesis in tendons, bones and joints, and can used as one of the bone support or joint care supplements PRE WORKOUT SUPPORT: ideal anabolic addition too your existing preworkout stack, to be taken alongside protein shakes, creatine, beta alanine, citrulline, carnitine, BCAA amino acids and others NATURALLY PRODUCED: made in the body from l-leucine, one of the bcaa amino acids in dietary protein. Our body's production of HMB declines with age, during calorie cutting or demanding exercise