The high-intensity, multi-joint movements in CrossFit may help you gain muscle strength and stamina. Adding additional weight to your workouts can further increase muscle gain by adding stress to your ...

Do 10 dead lifts, 20 push-ups, 30 sit-ups. Repeat four more times as fast as you can. Then collapse. That was the recent workout of one of the hottest new addictions hitting gyms all over Oregon, from ...