We've already seen the regular plank and the 2 variations of the exercise. Here is the 3rd variation and much more intense version of this full body workout. Facebook - https://www.facebook.com/VentunoFitness Twitter - https://twitter.com/VentunoFitness Youtube - http://www.youtube.com/user/ventunofitness A Ventuno Production http://www.ventunotech.com