Your girlfriend Claudia is really excited to try a new machine at her gym. It’s called a ‘growth chamber’ or something. You are naturally skeptical and tell her it sounds like junk science – how can something like that possibly work. Claudia is annoyed, and tells you she is going to try it out anyway – worst case, it doesn’t do anything. It turns out that it does work though, way way better than she had expected. Claudia’s growth is sudden and dramatic – and it isn’t limited to her muscles!