Fingernails grow nearly 4 times faster than toenails.
31
While 7 men in 100 have some form of color blindness, only 1 woman in 1,000 suffers from it.
50
Men get hiccups more often than women.
93
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
The brain can stay alive for 4 to 6 minutes without oxygen. After that cells begin die.
193
You can reschedule your sleeping pattern by not eating 12-16 hours before you want to be awake. Upon eating after this time period, your internal clock will reset to a new day, with the time of your first meal being interpreted as "morning".
11
Your heart rate can rise as much as 30% during a yawn.
69