Some pain in weight lifting feels kind of orgasmic. dj181 had a thread about the hardest "isolation" exercise (what the hell is wrong with that guy?) Any way, it came down to leg extension vs. calf raise. Personally I would way rather do leg extension any day. THAT pain will get you fucking tripping on shrooms.

Fuck it, maybe it releases drugs from stored body fat asswipe, don't be so judgmental.
Anyhoo, leg extensions are one of the most !! leet