chōu​jīn

cramp

抽筋 chōu​jīn
cramp verb
a sudden, involuntary, and painful contraction of a muscle, also known as a charley horse or the sensation of pulling a tendon

If you don't warm up before swimming, your legs can easily cramp.

Frequency

Movie subtitles
4.26 per million appears in 2% of films
Written text
4.61 per million

Sources

Definitions
CC-CEDICT