During a typical human life span, the human heart will beat approximately 2.5 billion times.
21
A human being loses an average of 40 to 100 strands of hair a day.
133
The whiter your tongue, the more germs there are on it.
88
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
Children are more allergic to cockroaches than they are to cats!
46
The human brain is insensitive to pain.
76
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
Sitting straight upright in your chair is bad for your back. You should instead slouch at an angle of 135 degrees.
10