Your fingernails grow faster in summer.
744
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
Your heart will pump about 212 million liters in its lifetime.
26
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
31
On average, there's 100 billion neurons in the human brain.
83
Human hair and fingernails continue to grow after death.
7
A person can live without food for about a month, but only about a week without water.
156
The human brain doesn't stop developing until about 25 years old.
102