Justin Brown shows you the proper way to hold a plank for the best full-body results.
For more from Justin Brown Fitness, check out:
Website: www.JustinBrownFitness.com
Facebook: Www.facebook.com/justinbrownfitness
Instagram: www.instagram.com/justinbrownfitness
Twitter: www.twitter.com/ justinbrownfit
Periscope: www.periscope.tv/justinbrownfit
Pinterest: www.pinterest.com/justinbrownfitness