Poor eyesight (myopia) is associated with higher IQ.
232
According to one report, it would take 800 marijuana joints to kill a person - but the cause of death would be carbon monoxide poisoning.
176
On average, there's 100 billion neurons in the human brain.
83
Crushed cockroaches can be applied to a stinging wound to help relieve the pain.
31
Every hour one billion cells in the body must be replaced.
17
Perspiration is odorless; it is the bacteria on the skin that creates an odor.
39
Your body is creating and killing 15 million red blood cells per second.
50
In one day, adult lungs move about 10,000 litres of air.
11