Some people have a "natural alarm clock" allowing them to wake up when they want. This is actually caused by a burst of the stress hormone adrenocorticotropin.
15
Panophobia is the fear of everything.
52
Pain travels through the body at 350 feet per second!
23
The average sperm cell swims at 8 inches per hour.
76
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
Only 1 person in 2 billion will live to be 116.
49
By the age of 60, most people have lost 50% of their taste buds.
17