The wise maniacs in Montreal have found the ultimate in symbiotic harmony of mind and body, and put it in a can.
They call it Guru.
It consists of all natural fructose, ginseng and other rock-star herbs, and ofcourse, a hefty quantity of guarana, a lovely form of caffeine. (see also, oily brown water)

Side effects include bouncing off the walls.

If you're ever in the neighborhood, I urge you to try it. It is most titillating when served with ice and vodka.