If you were to roll a lung from a human body and out flat it would be the size of a tennis court.
36
Flu shots only work about 70% of the time.
18
The average office desk has 400 times more bacteria than a toilet.
22
Sitting straight upright in your chair is bad for your back. You should instead slouch at an angle of 135 degrees.
10
You inhale about 700,000 of your own skin flakes each day.
29
The average person who stops smoking requires one hour less sleep a night.
79
A human being loses an average of 40 to 100 strands of hair a day.
133