HMB is another active lifestyle supplement that is making waves among the fit and lean. The name is short for beta-hydroxy-beta-methylbutyrate -a nutrient found in certain foods and breast milk. HMB is a metabolite of the amino acid, leucine, which plays a significant role in regulating protein synthesis and breakdown. HMB will benefit you by preventing the breakdown of muscle proteins (thereby increasing your lean mass), and by reducing your level of body fat. Research has indicated that everyone-even the elderly-can increase muscle mass and reduce body fat through the use of HMB. The list of benefits attributable to HMB does not stop here! This supplement will also boost your immune response by enhancing white blood cell production, and improve your aerobic performance through its effect on peak oxygen consumption. Like L-Glutamine, the body's natural production of HMB appears to be suppressed by physical stress such as strenuous exercise. Taking WEIDER HMB will help you to fully satisfy your body's requirements. The recommended dosage is 3g per day.