Our eyes are always the same size from birth, but our nose and ears never stop growing.
266
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
In one day, adult lungs move about 10,000 litres of air.
11
You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
17
Your heart will pump about 212 million liters in its lifetime.
26
The human brain doesn't stop developing until about 25 years old.
102