Humans Who Weren't Afraid To Push Their Body To The Limit (5 pics)
These people showed superhuman like endurance by doing some incredible things most of us couldn't even dream of doing.
Without sleep: 11 days.
In 1965, then 17-year-old Randy Gardner set the world record by staying awake for 264.4 hours, or 11 days and 24 minutes.
Why you shouldn't try this at home: Sleep is essential for building memory and skills as well as feeling more alert the next day.