The Bellicon Rebounder is the most fun you’ll ever have getting in shape, losing weight, improving your health, increasing your stamina, and boosting your immune system. Rebounding is also low-impact, low-stress, and revitalizing to your entire system. It’s actually fun too! There are 638 muscles in the human body and bouncing on a Rebounder engages all of them! Instead of avoiding your workouts, you’ll be looking forward to them.