The average female will have 3.3 pregnancies in her life.
49
Your heart rate can rise as much as 30% during a yawn.
69
Sitting straight upright in your chair is bad for your back. You should instead slouch at an angle of 135 degrees.
10
Children are more allergic to cockroaches than they are to cats!
46
The human body contains over a billion miles of DNA.
147
Enamel is hardest substance in the human body.
61
We are born with 350 bones, and die with 206.
135
The record for the longest scientifically documented period without sleep is 264.4 hours (eleven days).
15