"It may be that the chocolate triggers the pleasure response in the brain that releases more dopemin and acts as a boost"
I've been driving a TT convertible courtesy car while our's is in for service, which had almost the same effect as chocolate. When driving topless today (it has exceptional heaters) I spotted a young man look back as I passed. I say I, but I hope it was the young red headed lass in the passenger seat. He probably thought, lucky dirty old man and maybe he'd be right on another day, but my daughter was enjoying the wind in her hair.
Of course on replacing the fuel I'd used before handing it back, I may have taken the chocolate section route to the till, well it wasn't even out of the way.
Carpe choccy diem