A person can live without food for about a month, but only about a week without water.
156
It takes about 20 seconds for a red blood cell to circle the whole body.
102
Crying literally alleviates stress and uniquely allows humans to decrease feelings of anger and sadness.
24
When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23
Playing Tetris after a traumatic event can prevent the development of traumatic memories and reduce the chance of having flashbacks.
29
Your thumb is about the same size as your nose.
124
In ancient Egypt, priests plucked EVERY hair from their bodies, including their eyebrows and eyelashes.
130
The human eye blinks an average of 4,200,000 times a year.
233