Back in highschool, before track meets we would take this stuff called "Yellow Jackets". It was a big purple and yellow pill and even had a big wasp on the bottle. I think it was just a ****load of caffeine + ephedra, but did it work! I swear this one kid used one for the first time and it dropped his 400H time from 72 to 63s. I remember trying to stretch while on it and i was terribly jittery. I was kind of scared my heart was going to explode.