Funny thing about brains and music. fMRI's are showing extraordinary results in moments when the subject feels euphoric upon hearing their favourite classical pieces. They'd expected discrete areas to light up, but instead vast and seemingly unrelated areas started using far more oxygen as well.
Although a colleague of mine tried to hang upside down using something screwed into a door frame. Small screws, soft wood, inevitable outcome!
At a guess, this would be a doctor of medicine - on a quiet day when no interesting cases had come in.
Mine was serious, but mainly the fault of our embyo club not having much money. My guru* went for a really dramatic throw - an ippon seoi nage variation. I was vertical above him when his feet got tangled in loose canvas. It was very hurty.
*fading away now, but once one of the highest graded (in contest) BJA Dan grades in Europe.