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
Within three days of death, the enzymes that once digested your food begin to eat you.
22
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
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
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
32
The focusing muscles of the eyes move around 100,000 times a day. To give your leg muscles the same workout, you would need to walk 80km (50 miles) every day.
21
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197