Just something I want to share with you guys. I use my bellicon rebounder (medium size , 112cm diameter) for warming up and cooling down along with my jump program. Even 10 minutes a day will support your overall health. Apart from warmup and cool down, you can do a ton of other excersizes that will improve your strength and fitness level. The cool thing about it, you can easily do it with the jump rope workout ! One tip, buy a good quality rebounder, not a cheap crappy one.