<iframe src="https://player.vimeo.com/video/277210812?background=1&quot; width="640" height="360" frameborder="0" allowfullscreen></iframe>

Beginning (gram on left) – Perform regular jumping jacks.

Intermediate (mom in the middle) – Perform a jumping jack and then alternate lifting one knee at a time.

Advanced (me on the right) – Perform jumping jack and a full tuck jump.