I animated this a while back. I remember it took me days. First I had to learn how to actually draw the human skeleton (The Atlas of Human Anatomy for the Artist by Stephen Peck is an amazing resource). Then I had to distill the ideas into the bare minimum required to get the picture across. Finally I drew and animated the whole thing in piskel. The animation process was quite tedious, at least in part because this was my first try.

The feature image by Tim Mossholder from Pexels.