I want to sign up for a membership.

我想办会员卡。

workout 锻炼

get in shape by workout

通过锻炼保持身材

pull-up引体向上

sit-up仰卧起坐

stretch伸展

stretch your leg out 伸展腿

aerobic exercise 有氧运动

body-shaping exercise塑身运动

yoga瑜伽

practice yoga练瑜伽

develop my chest muscle

锻炼出胸肌

running machine 跑步机

instructor指导教练

equipment器材

warm up热身

we should warm up before doing

some exercises.

开始运动前，我们都应该热身。

have a flat belly

拥有平坦的小腹

beer belly 啤酒肚