Watch the following video tutorial somersaults, twists, and other rotations performed by jumping characters.https://youtu.be/fisebc9s3Js
[PDF of Slides]
Have a question? Go here.
Optional: Watch this video on cat twists:
Optional: Read this news article on the history of the cat twist problem:
The animation below (from the above article) illustrates how the angular momentum (L) of the cat is zero when you add up the three parts (upper torso twist + lower torso twist + body rotation).