It is possible to go blind from smoking too heavily.
50
The human brain doesn't stop developing until about 25 years old.
102
If you unfolded your brain, it would cover an ironing board.
42
We blink 25 times a minute.
51
When your face blushes, the lining of your stomach turns red, too.
154
The human heart creates enough pressure to squirt blood 30 ft.
37
Research indicates that babies who suck on pacifiers are more prone to ear aches.
21