I looked on YouTube for sleep deprivation and there were videos of people experimenting with staying awake for a while. You saw all the different stages.

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• Friedrich Nietzsche

  Philologist

  Tuesday, Oct 15, 1844
  Saturday, Aug 25, 1900

• Pope John Paul Ii

  Priest

  Tuesday, May 18, 1920
  Saturday, Apr 02, 2005

• Samuel Taylor Coleridge

  Poet

  Wednesday, Oct 21, 1772
  Friday, Jul 25, 1834

• Aldous Huxley

  Writer

  Thursday, Jul 26, 1894
  Friday, Nov 22, 1963

• Jean De La Bruyere

  Wednesday, Aug 16, 1645
  Thursday, May 10, 1696

• Voltaire

  Writer

  Sunday, Nov 21, 1694
  Saturday, May 30, 1778

• Tyler, The Creator

  Rapper

  Wednesday, Mar 06, 1991
  

• William Blake

  Poet

  Monday, Nov 28, 1757
  Sunday, Aug 12, 1827

• Sun Tzu

  Strategist

  Thursday, Jan 01, 1970
  Thursday, Jan 01, 1970

• Wayne Dyer

  Author

  Friday, May 10, 1940
  Saturday, Aug 29, 2015

• Jordan Peterson

  Psychologist

  
  

• John F. Kennedy

  35Th U.s. President

  Tuesday, May 29, 1917
  Friday, Nov 22, 1963

• Les Brown

  Author

  Saturday, Feb 17, 1945
  

• Dolly Parton

  Singer-Songwriter

  Saturday, Jan 19, 1946
  

• Vincent Van Gogh

  Painter

  Wednesday, Mar 30, 1853
  Tuesday, Jul 29, 1890