Dating back to the 1600's, thermometers were filled with Brandy instead of mercury.
16
Brain freeze is caused by the brain sensing the drop of temperature on your palate and increasing blood pressure in an attempt to save you from freezing.
14
Redheads require more anesthesia to 'go under' than other hair colors do.
50
It takes 17 muscles to smile, 43 to frown.
65
Some people have a "natural alarm clock" allowing them to wake up when they want. This is actually caused by a burst of the stress hormone adrenocorticotropin.
15
Wearing tight pants can lead to impotence in men.
120
20 minutes after smoking a cigarette, blood pressure drops to normal.
37
Medical research has found substances in mistletoe that can slow down tumor growth.
32