The latest workout craze has people jumping like a kangaroo.
Barabara Kielich, a Kangoo Jumping instructor, see the craze as the future of fitness.
Members of her class strap on boots that look like roller blades with springs strapped to the soles instead of wheels.
In the boots, it's impossible to stop bouncing.
Kielich says a Kangoo Jumping workout provides as much or more of a cardio workout than under forms of exercise without the impact on joings.