You can't tickle yourself.
29
The average sperm cell swims at 8 inches per hour.
4
It takes approximately 12 hours for food to entirely digest.
93
Unconsciousness will occur after 8-10 seconds after loss of blood supply to the brain.
94
The human sigh acts as a physiological reset button.
23
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
Our Right Lungs takes more air than our left lung.
194
A person can live without food for about a month, but only about a week without water.
156