You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
19
The human brain doesn't stop developing until about 25 years old.
102
It is possible for you to survive even after the removal of the spleen, the stomach, one kidney, one lung, 75% of the liver, 80% of the intestines, and almost every organ from the pelvic and groin area.
218
The human sigh acts as a physiological reset button.
23
Your body is creating and killing about 2.4 million red blood cells per second.
17
A person can live without food for about a month, but only about a week without water.
156
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