Traditional exercises like sit-ups, press-ups and pull-ups are great for strengthening the body, providing you do them properly.
2
记录俯卧撑、仰卧起坐或是跑步速度等简单的数值，都会让你发现体育锻炼是如何使你变得更强更快的。
Recording simple Numbers such as the number of push-ups, sit-ups or speed you can run can help you see that the exercise is making you stronger and faster.
3
在看电视进广告的间隙做仰卧起坐和俯卧撑。
Do sit ups and push ups during commercial breaks while watching TV.
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