Men have larger hearts; women's hearts beat faster.
77
The whiter your tongue, the more germs there are on it.
88
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
Like fingerprints, everyone's tongue print is different!
71
Your ears secrete more earwax when you are afraid than when you aren't.
229
A fetus develops fingerprints at eighteen weeks!
32
The average tastebud lives only 10 days before it dies and is replaced by a new one.
15
Flu shots only work about 70% of the time.
18