gym rat
US /ˈdʒɪm ræt/
UK /ˈdʒɪm ræt/

1.
健身狂, 健身爱好者
a person who spends an unusually large amount of time at the gym
:
•
My brother is a real gym rat; he's there every day for hours.
我哥哥是个真正的健身狂;他每天都在健身房待好几个小时。
•
She became a gym rat after deciding to compete in a bodybuilding competition.
她决定参加健美比赛后,就成了一个健身狂。