When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
A man's beard grows fastest when he anticipates sex.
239
Unconsciousness will occur after 8-10 seconds after loss of blood supply to the brain.
93
Your heart will pump about 212 million liters in its lifetime.
26
It takes approximately 12 hours for food to entirely digest.
93
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
The average sperm cell swims at 8 inches per hour.
4
On average, there's 100 billion neurons in the human brain.
83