Add Yahoo as a preferred source to see more of our stories on Google. Unfortunately, pain and injury can be a few downsides of an active lifestyle. A combination of genetics and incomplete cool-downs ...

Add Yahoo as a preferred source to see more of our stories on Google. Many of us have felt a muscle in some part of our body suddenly and involuntarily tighten, causing a twitch or even severe cramp.

Tiger Woods had yet another surgery on his lower back Friday morning. This one he hopes will relieve some of the spasms like those he experienced this year. It was the sixth surgery on his lower back ...