因为踮脚时双侧小腿后部肌肉的收缩挤压，会促进锻炼者下肢血液的回流，加速血液循环，可防止下肢静脉曲张。
Because when tiptoe, the bilateral muscle of calfs can contract and squeeze, will promote the exerciser by the return of lower extremity blood, accelerate blood circulation, prevent varicose veins.
由于锻炼身体可以使骨骼、肌肉、心脏和肺活量增强，研究者认为它还可以帮助大脑学习新知识以及更好地巩固记忆。
Just as exercise makes the bones, muscles, heart, and lungs stronger, researchers think that it helps the brain learn new things and remember old information better.
Chirjeev v Sawhney是Arlington地区黄金健身房的私人教练和管理者，他告诉邮报说到：“许多人认为锻炼才可以塑造肌肉，实际上我们都是在睡眠中塑造的。
"Many people think you build [muscle] in the gym, but you actually build when you sleep, " Chirjeev Sawhney, a personal trainer and fitness manager at a Gold's Gym in Arlington, told the Post.
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