noun
muscle pain; sore muscles; myalgia
General term for muscle soreness, including post-exercise delayed onset muscle soreness. Also used in medical contexts as myalgia.
昨日の運動で筋肉痛になった。
I got muscle pain from yesterday's exercise.
筋肉痛がひどくて階段を降りるのがつらい。
My muscle soreness is so bad that going down stairs is painful.