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
If you hold farts in during the day, they'll just come out when you sleep.
16
Fingers prune underwater not because of them absorbing the water or washing away the oil, but because of an evolutionary trait caused by the brain to enhance the grip of your fingers underwater.
24
The human body contains over a billion miles of DNA.
147
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
19
Our eyes are always the same size from birth, but our nose and ears never stop growing.
269
There's 100 trillion good bacteria living in your body.
17