crossfit quote cards heart rate variability
Source: BOXROX

Video of 522 Unbroken Triple Unders!

Check out this incredible athletic feat!

A great achievement!

World Record Triple Unders

AMAZING World Record in Triple Unders- 522 jumps by German Rope Skipper!! Ropeskipping Rope skipping World Rope Skipping Championship 2016 Gymnastikförbundet – Officiell sida

Posted by Sportway.se on Samstag, 30. Juli 2016

How to improve your Double Unders