Lifting Weights? No Need to Go Heavy

You don't need to feel wimpy for lifting little weight at the gym: A new study finds that lifting light weights is just as effective as lifting heavy ones for building muscle. The key is to lift the weights more times (meaning a greater number of repetitions) so that your muscles get just as tired as they would with heavier weights, the researchers said. "Fatigue is the great equalizer here," study researcher Stuart Phillips, a professor of kinesiology at McMaster University in Ontario, Canada,