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Interval training for older and elderly poeple

510 意见 • 04 十月 2017
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Deen Doughouz
Deen Doughouz
225,186 订户
225,186

this short film describe the importance of interval training for older and elderly people. description of the method and the output of 40 days of training in older man
emphasize the safety of the method

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