More Growth Hormones

Add a light set to the end of your strength workout. In a study in the Journal of Strength and Conditioning Reasearch, Japanese researchers found that your body will pump out more growth hormone if you finish your heavy-weight-lifting session with a single, high- repetition set of an exercise using a lighter load. "This could be partially responsible for greater strength gains," says Kazushige Goto, Ph.D., the study's lead author. A typical strength workout might be four sets at 90 percent of your one-rep max, followed by 20 reps at 50 percent of your one-rep max.