An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
The human brain doesn't stop developing until about 25 years old.
102
Every human spent about half an hour as a single cell.
144
It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
One human hair can support 3 ounces.
191
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
You forget 90% of your dreams.
256