If you have these big huge goals they are not as attainable as smaller goals. It's better to start out slow and gradually increase - that way you don't get burned out. But you've got to have a plan.
You can really raise your heart rate, burn fat and tone your lower body.
Their jumps are bigger, vertical and horizontal, and they are faster because of leg strength.
You've got to be careful, because it really is hard on the knees and joints.