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 almost impossible to sneeze with your eyes open. It is a defense mechanism that has evolved to protect our eyes from bacteria and debris.
164
Redheads require more anesthesia to 'go under' than other hair colors do.
50
Unlike dogs, pigs, and some other mammals, humans cannot taste water. They taste only the chemicals and impurities in the water.
95
The smallest human penis ever recorded was just 5/8 of an inch long!
77
Smokers get ten times more wrinkles than non-smokers.
171
If you were to roll a lung from a human body and out flat it would be the size of a tennis court.
36