single leg prisoner back extension

BOXROX – Competitive Fitness Magazine is the world’s biggest online magazine for fans of CrossFit® and functional fitness. With 2,500,000+ readers and 6,000,000+ pageviews monthly, from more than 185 countries, it connects the worldwide fitness community. The magazine and its 250+ contributors cover many topics including CrossFit®, weightlifting, nutrition, lifestyle and community related news. Everything that a fitness fan is searching for.

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