Abstract
This chapter reviews the importance of fatigue (sleepiness) as a cause of distress and accidents. It insists on the fact that the best way to avoid it is to sleep enough and well. It presents the stimulants that could help you fight sleepiness if nothing else has worked (caffeine, modafinil).
Keywords: Accident, Abuse, Caffeine, Energy drink, Fatigue, Legal status, Modafinil, Sleep debt, Sleepiness, Withdrawal.