Sitting straight upright in your chair is bad for your back. You should instead slouch at an angle of 135 degrees.
10
More people have a phobia of frogs than rats.
41
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
Human teeth are almost as hard as rocks!
47
The human body contains over a billion miles of DNA.
147
The average person has over 1,460 dreams a year!
69
Only 1% of bacteria cause disease.
45