Step It Up
A good Runners World article. I've been trying this method recently and it has really helped my fitness plus calorie burn. I haven't felt this fit for over ten years. Still a way to go though...Can't undo ten years of weight gain in 2 months....
Источник : http://www.runnersworld.com/article/0,7120,s6-238-
Это ваше или знаете ли вы, кто продает ?
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