She can be a motivating force



It starts with boys showing off on the playground, and the performance never ends: When a woman is around, men work out harder. In a new German study, men pushed themselves 12 percent harder and complained less about pain during a bicycle stress test when a female doctor supervised than when a man did. Study author Christian Jung, M.D., says the results could translate to your gym: “Working out with a woman may help you push harder, probably because men are evolutionarily programmed to impress women,” he says. Choose your treadmill wisely.



Image by Rodale