- Most parents lose between 400 and 750 hours of sleep in each child’s first year.
2. The record for the longest period of time without sleep stands at 264.4 hours and was set by a high school student in 1964.
Randy Gardner
3. Man is the only mammal that willingly delays sleep.
4. Scientists still don't know — and probably never will — if animals dream during REM sleep, as humans do.
5. Caffeine has been called the most popular drug in the world that hinders sleep.
Source: 25 Random Facts about Sleep
Source: 18 Interesting Facts You (Probably) Didn’t Know About Sleep