When your face blushes, the lining of your stomach turns red, too.
154
Sleeping on your stomach can induce weirder, scarier, and sexier dreams.
22
Nearly 80 percent of all sudden cardiac arrests happen at home.
7
It takes about 20 seconds for a red blood cell to circle the whole body.
102
Pain travels through your body at 350 ft. per second.
36
Dogs can be trained to identify the scent of lung cancer long before symptoms develop.
190
A person will burn 7 percent more calories if they walk on hard dirt compared to pavement.
45
The average human body contains enough iron to make a small nail.
50