A human being loses an average of 40 to 100 strands of hair a day.
133
Every human spent about half an hour as a single cell.
144
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
Most of us have microscopic, worm like mites named Demodex that live in our eyelashes and have claws and a mouth.
-137
You can't tickle yourself.
29
Your heart will pump about 212 million liters in its lifetime.
26
Yawns are more contagious among people with closer relationships.
163
Modern humans first appeared about 200,000 years ago, but record keeping didn't begin until about 6,000 years ago. That means about 97% of human history is lost.
21