Medically reviewed by Amy Kwan, PT Key Takeaways Lower back and hip pain can be caused by injuries like muscle strains and overuse from repetitive movements.Arthritis is a common cause of one-sided ...

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 ...

Night leg cramps, or nocturnal leg cramps, are sudden, involuntary muscle contractions that usually occur in the calves, feet, or thighs during rest or sleep. These painful spasms can last from a few ...

Picture this: you’re lying in bed, just about to fall asleep after a long day of working, running and going about your daily business, when your leg starts to cramp. The contractions, the twisting, ...