Don't Let Sitting Kill You -- The Level Will Keep You Moving, You Won't Notice

As I write this post, my computer is resting on my ironing board (not recommended), and I'm standing on a vaguely skateboard-like contraption. It has a protrusion in the middle that makes the board slightly unstable, but not so much so that I'm struggling to stay balanced. It does not provoke anger like the Bosu ball.