Get that athletic body you want with this high intensity interval training (HIIT) workout. Work rigorously for 45 seconds and be rewarded with 15 seconds of €rest€. This will get the heart rate up and will burn calories resulting in a a faster, stronger you. In this Grokker Premium video, Jennifer blends in some of her Martial Arts background to give you a full body workout designed to reward you with a defined physique.