HealthHIIT Your WorkoutSavePrintShutterstock*MASH Up Conditioning7/19/2014|Updated: 7/20/2014We had a problem loading this article. Please enable javascript or use a different browser. If the issue persists, please visit our help center.Share this articleLeave a commentMASH Up ConditioningAuthorRelated Topicshealthexercisefitnessnutritionworkouthigh intensity workouthigh-intensity interval trainingHIIThuman growth hormoneHGHRhabdo