Did Krav Maga Cardio Kickboxing in Portland, Oregon. Approximately 50 minutes non-stop. Incorporates crossfit and P90x type body weight exercises at the beginning and the end. At the beginning they are called "warm up". At the end, they are called 9 minutes of hell, mainly due to the added plyometrics. In between is the bag work, where Krav Maga self defense fighting techniques are incorporated. All tolled, about an 800 to 1000 calorie burn. Three times a week. Yeah, baby.