About 400 different kinds of microbes live on and in the human body.
-3
You would need to smoke between 20,000-40,000 joints to be at risk of dying of a THC overdose.
12
The brain receives 20% of the body’s oxygen and 25% of total body glucose utilization, despite it accounting for only 2% of a person’s weight (about 1.4 kilograms).
8
It takes 17 muscles to smile, 43 to frown.
65
Holding hands with someone you love can alleviate physical pain as well as stress and fear.
26
Men have larger hearts; women's hearts beat faster.
77
Research indicates that babies who suck on pacifiers are more prone to ear aches.
21
The average sperm cell swims at 8 inches per hour.
76