The human sigh acts as a physiological reset button.
23
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
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
There are about 1,400 different species of bacteria in your belly button.
10
Your thumb is about the same size as your nose.
124
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