A roller derby music video montage featuring highlights of the 2012 Hard Knox Roller Girls. Copyright 2012 GX Media and HKRG.
A fast & furious HIIT workout to help you smash your 27 laps in 5! Check out the original post at: http://rollerderbytraining.co.uk.
For more info follow on: http://www.facebook.com/ChrisTomkinsonTraining http://www.twitter.com/CPTTraining This is Mark Thomas, Great Britain International a…
