Tapout XT - Cardio XT: TapouT XT was specifically designed for highly motivated people who are ready for an intense physical and mental challenge. In other words, XT won't be easy - but it was never intended to be. Each workout inspires you dig down deep so you get the extreme B & A results you want. TapouT XT is MMA-Inspired exercise that simultaneously fires the targeted muscles while keeping your heart rate up so you blast calories. This simple 'Science of Sweat' philosophy also cuts your workout time down so you can get in, get it on, and then get it over.