What is the longest time someone has stayed awake?

As a subject matter expert in the field of human endurance and sleep studies, I can provide you with a detailed answer to your question. The scientifically documented record for the longest time a human has intentionally stayed awake without the use of stimulants is held by Randy Gardner. Randy Gardner, born on August 7, 1949, is a notable figure in the study of sleep deprivation. In 1964, while he was a high school student in San Diego, California, Gardner set a remarkable record by staying awake for an astonishing 264.4 hours. This duration equates to 11 days and 25 minutes. To put this into perspective, imagine being awake for more than a week straight without any sleep. This is not only an impressive feat but also a significant study in the effects of sleep deprivation on the human body and mind. It's important to note that while Gardner's achievement is notable, sleep deprivation for such extended periods can have severe health consequences. The human body requires sleep for numerous physiological processes, including memory consolidation, tissue repair, and the regulation of mood and appetite.

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).