Bearing a male child can alter a woman's brain by leaving male DNA that can persist for the rest of her life, making her less likely to suffer from Alzheimer's disease, promote tissue repair, and improve her immune system.
16
A hard working adult sweats up to 4 gallons per day. Most of the sweat evaporates before a person realizes it's there, though!
25
When you get goosebumps and your hair stands, the hair helps to trap air, making you feel warmer by keeping in your body heat.
46
When you look up at the blue sky and see white dots flying around, you’re actually seeing your own white blood cells.
30
Cracking your knuckles does not actually hurt your bones or cause arthritis. The sound you hear is just gas bubbles bursting.
18
The human brain is insensitive to pain.
76
Quick naps not only improve your alertness, but they also help in decision making, creativity and sensory perception.
149
We are born with 350 bones, and die with 206.
135