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
It is possible to go blind from smoking too heavily.
50
The chemicals indole and skatole, which help to account for the particular smell of human feces, are used as ingredients in perfume!
-3
All humans have the ability to see ultraviolet light, but it is passively filtered out by the eye's lens. People who undergo surgery to remove the lens can detect ultraviolet light.
22
A fetus develops fingerprints at eighteen weeks!
32
Your heart will pump about 212 million liters in its lifetime.
26
Ingrown toenails are hereditary.
15
In older people, memory is best early in the morning and then declines during the late afternoon.
33