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
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266
The average person's skin weighs twice as much as their brain.
131
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
A human being loses an average of 40 to 100 strands of hair a day.
133
The average sperm cell swims at 8 inches per hour.
76