[FONT="]New research is challenging traditional workout wisdom, suggesting that lifting lighter weights many times is as efficient as lifting heavy weights for fewer repetitions. It is the latest in a series of studies that started in 2010, contradicting the decades-old message that the best way to build muscle is to lift heavy weights.
[/FONT]https://www.sciencedaily.com/releases/2016/07/160712094259.htm
[/FONT]https://www.sciencedaily.com/releases/2016/07/160712094259.htm