You mostly breathe from only one nostril at a time!
75
Fingernails grow fastest on the hand you favor.
44
The tongue is the strongest muscle in the human body.
50
It has been shown that caffeine causes headaches when stopped suddenly and can cause morning headaches that are relieved by a dose of caffeine.
101
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
Due to the angle at which the optic nerve enters the brain, staring at a blue surface during sex greatly increases the intensity of orgasms.
252
10 seconds is the amount of time until unconsciousness after the loss of blood supply to the brain.
108
On average, someone in the US suffers a stroke every 40 seconds; someone dies every 3 minutes from stroke.
57