Your skeleton keeps growing until you are about 35, then you start to shrink.
74
Your body is creating and killing about 2.4 million red blood cells per second.
17
When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23
The human brain is more active during sleep than during the day.
28
Due to the angle at which the optic nerve enters the brain, staring at a blue surface during sex greatly increases the intensity of orgasms.
252
In one day, adult lungs move about 10,000 litres of air.
11
