A muscle spasm, also known as a cramp, twitch or charley horse, is the sudden, involuntary forced contraction of a muscle. Here are the main causes.
USA TODAY, USA Today
Mon, 05/29/2023 - 2:05am
A muscle spasm, also known as a cramp, twitch or charley horse, is the sudden, involuntary forced contraction of a muscle. Here are the main causes.