You found the
Magic Jump Rope!

Skipping rope (British English) or Jump rope (American English) is the primary tool used in the game of skipping played by children and many young adults, where one or more participants jump over a rope swung so that it passes under their feet and over their heads. This may consist of one participant turning and jumping the rope, or a minimum of three participants taking turns, two of whom turn the rope while one skipper jumps.

Modern jump rope includes acrobatic performances of amazing skill and dexterity, sometimes involving very long ropes with a dozen jumpers simultaneously doing tricks and jumping. Jump rope teams travel the world doing exhibitions.

Jump rope is also considered an official sport. Athletes compete in individual and team jump rope events using single ropes or double Dutch. In freestyle routines, jumpers have a set time limit to demonstrate a combination of skills in four categories- footwork, strength, multiple unders and rope manipulations; in some competitions these are choreographed to music. During the speed events, athletes try to complete as many jumps as possible within a particular amount of time. Paul Morning, from United States of America, has set the world record for most jumps in 10 seconds with 72 jumps.

Skipping rope is a great cardiovascular workout, similar to jogging or bicycle riding. This aerobic exercise can achieve a "burn rate" of up to 700 calories per hour of vigorous activity, with about 0.1 calories consumed per jump. Ten minutes of jumping rope is roughly the equivalent of running an eight-minute mile. Jumping rope for 15–20 minutes is enough to burn off the calories from a single candy bar.