<P> Randy Gardner (born August 7, 1949) is the holder of the scientifically documented record for the longest a human has intentionally gone without sleep not using stimulants of any kind . In 1964, Gardner, a high school student in San Diego, California, stayed awake for 264.4 hours (11 days 25 minutes). This period of sleeplessness broke the previous record of 260 hours held by disk jockey Tom Rounds of Honolulu . </P> <P> Gardner's record attempt was attended by Stanford sleep researcher Dr. William C. Dement . Gardner's health was monitored by Lt. Cmdr . John J. Ross . A log was kept by two classmates from Point Loma High School, Bruce McAllister and Joe Marciano Jr . Accounts of Gardner's sleep - deprivation experience and medical response became widely known among the sleep research community . </P>

Who holds the record for longest time without sleep