Workouts that burn the most calories?

HIIT...High Intensity Interval Training. This makes your heart rate start slow, hit max, and slow back down again, burning the max number of calories. Ex: 20 sec power walk, 20 sec jog, 20 sec spring, then back to 20 sec power walk, and so on. By speeding up and slowing down your heart, you burn the maximum number of calories.