Flu shots only work about 70% of the time.
18
Having sex can make a woman look younger and more attractive due to the release of estrogen and collagen.
346
An average heart beats 100,000 times a day, pumping some 2,000 gallons of blood through its chambers. Over a 70-year life span, that adds up to more than 2.5 billion heartbeats.
73
We are born with 350 bones, and die with 206.
135
Vicks inhalers can cause you to test positive for Meth on drug tests.
41
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
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139