1. Take out the jump ball first, and then turn on the light on the jump ball (some jump balls have no light, so this step can be omitted).

2. Put the anklet of the jump ball on your foot, as shown in the figure.

3. Grab the rope of the jump ball with your hands and throw it up.

When the jump ball rotates to the other foot, the other foot jumps up.

5. Continue to spin the jump ball with your feet.

6, while turning and jumping, you can repeat this.