The average sperm cell swims at 8 inches per hour.
76
Your thumb is about the same size as your nose.
124
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266
Staying awake for 17 hours is the same for your body as drinking 2 glasses of wine.
193
Enamel is hardest substance in the human body.
61
When you take a step, you are using up to 200 muscles.
886
Our Right Lungs takes more air than our left lung.
194