The human brain is insensitive to pain.
76
The right lung takes in more air than the left.
30
You inhale about 700,000 of your own skin flakes each day.
29
When you fall in love, that 'high' feeling is caused by a flood of dopamine that is similar to that of cocaine.
44
There is a disease called ichthyosis that turns the skin scaly like a fish.
90
Cracking your knuckles does not actually hurt your bones or cause arthritis. The sound you hear is just gas bubbles bursting.
18
The average person has over 1,460 dreams a year!
69
In one day, adult lungs move about 10,000 litres of air.
11