When you get goosebumps and your hair stands, the hair helps to trap air, making you feel warmer by keeping in your body heat.
46
Within three days of death, the enzymes that once digested your food begin to eat you.
22
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
In one day, adult lungs move about 10,000 litres of air.
11
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
After age 30, the brain begins to lose about 50,000 neurons per day - shrinking the brain .25% each year.
55
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217