Yawns are more contagious among people with closer relationships.
163
We forget why we have entered a room because passing through doors creates an ‘event boundary’ causing the brain to file away what we were just thinking about.
26
A person will create enough saliva to fill two average size swimming pools during his lifetime.
191
A person can live without food for about a month, but only about a week without water.
156
Having sex can make a woman look younger and more attractive due to the release of estrogen and collagen.
346
Every human spent about half an hour as a single cell.
144
It takes about 20 seconds for a red blood cell to circle the whole body.
102
In ancient Egypt, priests plucked EVERY hair from their bodies, including their eyebrows and eyelashes.
130