When my wife had emergency surgery a couple of years ago, I got like 5 hours of sleep over a 96 hour period. I stayed up by drinking Red Bulls. Somewhere on Tuesday after the surgery (it was Monday) I added up the receipts for all the Red Bulls I drank. Over 25 - half on Monday alone! Somewhere over the 96 hours, my piss started to smell like Red Bull. Which makes you wonder - what's really in Red Bull anyway? My conclusion:
Caffeinated piss, obv.