ultimate plank challenge

BOXROX – Competitive Fitness Magazine is the world’s biggest online magazine for fans of CrossFit® and functional fitness. With more than 5,000,000+ readers and 10,000,000+ 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.

BOXROX and its content is not affiliated with CrossFit, Inc in any way nor is it endorsed by CrossFit, Inc or any of its subsidiaries. CrossFit® is a registered trademark of CrossFit, Inc.