body up

详细解释:【化】 加重; 加厚; 增加体积; 增稠

例句：

An exercise for strengthening arm muscles performed by lying face down with the palms on the floor, and pushing the body up and down with the arms.俯卧撑锻炼手臂肌肉的运动，运动时脸部朝下卧着并把手掌撑在地面上并且用胳膊推动身体上下运动