HMB plays a role in the synthesis of muscle tissue. It has the ability to burn fat and build muscle consistently in response to exercise. Recently, a study showed in a control group supplementing with HMB, that after taking 3 grams of HMB per day for three weeks, those who took HMB versus the random placebo takers gained three times more muscle on their bench press! Another study showed that those who supplemented with HMB experienced enhanced strength, greater endurance, and increased fat loss. It's ability to boost endurance alone is an incredible result. A seven week long study showed a much greater gain in muscle when a group of 28 participated in a regular weight-training program.