Men have larger hearts; women's hearts beat faster.
77
Your heart rate can rise as much as 30% during a yawn.
69
The record for the longest scientifically documented period without sleep is 264.4 hours (eleven days).
15
If your stomach didn't produce a new layer of mucous every two weeks, it would digest itself.
33
Research indicates that babies who suck on pacifiers are more prone to ear aches.
21
It is possible to go blind from smoking too heavily.
50
A person infected with the SARS virus, has a 95-98% chance of recovery.
23