It's a high intensity workout. It's by trainer Sean T. You start out with the fit test, which consist of all cardio workouts. The new trend is working out at a quicker pace to keep your heart rate up and burn more calories. Basically you work out for 30 mins at high speed for 1 min, you rest for 1 min before the next exercise. The 30 mins includes stretching in the beginning, workout and cool down at the end. You'll burn more calories in 30 mins than you normally would working out for 1 hr. It's perfect for me because I have a very hectic schedule. Therefore, 30 min workouts is the perfect solution for me. I highly recommend it. It's difficult in the beginning but after the 1st week, you'll see improvement in your performance. The best part is dropping down the weight!!