A man's beard grows fastest when he anticipates sex.
239
The human brain doesn't stop developing until about 25 years old.
102
It takes about 20 seconds for a red blood cell to circle the whole body.
102
The human sigh acts as a physiological reset button.
23
It takes approximately 12 hours for food to entirely digest.
93
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
92
