Either way, if I'm not careful and maintaining awareness, a good ride will unleash a tiger. I can start out all 59-y.o. mild-mannered librarian, and if I'm not careful, it can get all
Premium Rush. I don't intend it, but the adrenaline gets me too pumped-up and I stop thinking right.
Adrenaline=go for it!!
Same phenomenon that makes all the girls look prettier at closing time.