A back spasm involves a sudden, involuntary muscle contraction that can be set off by something as routine as lifting a bag or sitting for too long. Muscle fatigue, dehydration, and nerve irritation ...

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 ...

Back pain before 30 is not normal if it is frequent or persistent.

Muscle spasticity is a common and often debilitating consequence of spinal cord injury that can significantly affect mobility ...