Jumping rope is actually a really exceptional cardiovascular workout. The rhythm that swinging the rope creates gets your heart rate up and the amount of tension it requires to swing it and jump ensures a whole-body workout. But what if you live somewhere with low ceilings? Well, then you can buy the JumpSnap. It’s a jumprope – without the rope. An “onboard computer” claims to keep you honest by tracking how many times you spin it, but without the actual physical rope there’s nothing that’s actually “exercise” about this.