Pain occurs when sounds are above 130 db.
124
It takes about 20 seconds for a red blood cell to circle the whole body.
102
A man's beard grows fastest when he anticipates sex.
239
Your fingernails grow faster in summer.
744
The human brain has the capacity to store everything that you experience.
4k
Yawns are more contagious among people with closer relationships.
163
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
There are times when you're walking that the pressure on your feet exceeds your body weight, and when you're running, it can be three or four times your weight.
62