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 ...

Adjei, MD Key Takeaways Causes of back spasms range from poor posture or minor muscle strains to underlying health conditions ...

WASHINGTON - Most people who work out have a pulling exercise somewhere in their routine - a row, a pulldown, maybe a pull-up. But far fewer could tell you which muscles they’re actually training, or ...