Your thumb is about the same size as your nose.
124
Only humans shed emotional tears.
331
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
The average person will go on a date at least 100 times before they finally marry.
33
You forget 90% of your dreams.
256
A man's beard grows fastest when he anticipates sex.
239
Enamel is hardest substance in the human body.
61
By weight, Bone is five times stronger than steel.
417