Randy Gardner sleep deprivation experiment
Randy Gardner is an American man from San Diego, California, who once held the record for the longest amount of time a human has gone without sleep. Between December 1963 and January 1964, the then 17-year-old Gardner stayed awake for 11 days and 25 minutes (264.4 hours), breaking the previous record of 260 hours held by Tom Rounds.
Source: Wikipedia — Randy Gardner sleep deprivation experiment (CC BY-SA 4.0)