Remember how much fun it was to bounce on a trampoline when you were a kid? Well, it turns out that bouncing as an adult can be just as good. Rebounding, a good cardio workout, can burn more calories than walking or jogging. Working out on a mini-trampoline, which is also known as a rebounder, is an effective and convenient way to get fit. The only equipment you need to do rebounding exercise is a rebounder and a small space.