Spinning instructor would be a great profession for a chaotic evil being who feeds on the suffering of others.
Some 100 pound lady in too much spandex with too much enthusiasm screaming, “Active rest! Get up on your toes!”
While I’m thinking, “I hate you, lady. I outweigh you by 150 lbs, and I despise you with all of them.”
This is why the villianesses in fantasy movies are always in bikinis.