The largest cell in the human body is the female egg and the smallest is the male sperm.
682
Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
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 about 20 seconds for a red blood cell to circle the whole body.
102
About 400 different kinds of microbes live on and in the human body.
-3
In one day, adult lungs move about 10,000 litres of air.
11
You inhale about 700,000 of your own skin flakes each day.
29
Male hospital patients fall out of bed twice as often as female hospital patients.
71