It’s one thing when a supplement helps obese people lose weight, but when a supplement can get super fit athletes to shed body fat, it’s time to take notice. Nutritionists at Poznan University in Poland examined the effects of HMB on 58 male athletes in their 20s. After taking HMB for 12 weeks, subjects gained a bit more muscle mass than those who didn’t take it. The real difference was in the fat loss, though. The HMB group lost over two pounds of fat without reducing their calories. This group also became fitter and was able to pedal an exercise bike at an intense pace longer than the group that did not take HMB. The daily dose used was three grams a day every day.