A hard working adult sweats up to 4 gallons per day. Most of the sweat evaporates before a person realizes it's there, though!
25
The skin on your lips is 200 times more sensitive than your fingertips.
345
It takes about 20 seconds for a red blood cell to circle the whole body.
102
Pain occurs when sounds are above 130 db.
124
Brain scans show that people who view photos of a beloved experience an activation of the caudate - the part of the brain involving cravings.
103
More people have a phobia of frogs than rats.
41
On average, women have always lived longer than men.
195