Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
31
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
Only humans shed emotional tears.
331
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
Yawns are more contagious among people with closer relationships.
163
A person will create enough saliva to fill two average size swimming pools during his lifetime.
191
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132