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
In 1996, research found that having excessive body hair is linked to higher intelligence.
23
We are born with 350 bones, and die with 206.
135
Fingernails grow nearly 4 times faster than toenails.
31
A third of the human population sneezes when they look at the Sun. Light can signal the ocular nerve near the sinuses and triggers a sneeze.
18
The average sperm cell swims at 8 inches per hour.
76
