You'll be fine. Your motor functions will slow and you may hallucinate, but beyond that 7 days won't have adverse effects on the body. Sleep deprivation isn't the killer it's really the organ failure that snuffs you out ( after prolonged lack of sleep aka many months). Pro tip: forget red bull and go for Folgers and put it in your lip like chewing tobacco. Your teeth will be blacker than a coal miner, but you won't be tired.