limber
/ˈlɪmbə(r); `lɪmbɚ/ adj
(dated 旧) supple; flexible 柔软的; 灵活的. limber, v (phr v) ,limber `up exercise in preparationfor sport, etc; warm up (warm2) （运动等前）做准备活动, 活动肢体
I always do a few easy exercises to limber up before a match. 我在比赛前总要做些简单的准备活动.