You can't tickle yourself.
29
Our Right Lungs takes more air than our left lung.
194
Enamel is hardest substance in the human body.
61
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
The largest cell in the human body is the female egg and the smallest is the male sperm.
682
Every human spent about half an hour as a single cell.
144
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
31
Having sex can make a woman look younger and more attractive due to the release of estrogen and collagen.
346