The average sperm cell swims at 8 inches per hour.
4
You forget 90% of your dreams.
256
Your thumb is about the same size as your nose.
124
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
Most of us have microscopic, worm like mites named Demodex that live in our eyelashes and have claws and a mouth.
-137
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
Your heart will pump about 212 million liters in its lifetime.
26