Click the green thingamajig. Notes and credits.
I wanted to do something stupid, so here you go. Also, there is a Simulator studio, so I guess this is for that, too. By the way, filler project. Inspiration by me, taking a deep breath. Credits to @lobie5 for a sound. I also got breathing sound effects from Soundbible. HA! So you DID read the instructions! Press A to breathe in, L to breathe out.