On average a woman has 4 sexual partners in her lifetime.
-143
The human brain doesn't stop developing until about 25 years old.
102
One human hair can support 3 ounces.
191
The average person's skin weighs twice as much as their brain.
131
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
Pain occurs when sounds are above 130 db.
124
The human brain uses approximately as much energy as a 10 watt light bulb.
120