Combine core, cardio, upper body and legs all in one quick 15-minute workout! The fitness/stability ball is the perfect tool not just for ab crunches but for full body exercise that builds smart muscles. This workout can be used as a warm-up prior to more intense exercise or as a cardio and core workout on its own. (I left in the first minute for the Kodi fans :) www.facebook.com/FitRob
