Today's exercise equipment tend to be large bulky , difficult to adhere to , and other shortcomings such as wasting energy . So this paper tries to design a portable exercise machine, time-saving as well as effective , to satisfy people's demand . This machine will transform redundant mechanical energy in human body into electrical energy , which is portable and environmental friendly with low carbon .%现今的锻炼器械往往存在庞大笨重、难于坚持以及能量浪费等不足之处。我们通过设计一种既省时省力又有效的轻便型锻炼机器来满足人们的这种锻炼需求，并将人体运动过程中多余的机械能转化为电能的装置，简便易携、低碳环保。
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