A third of the human population sneezes when they look at the Sun. Light can signal the ocular nerve near the sinuses and triggers a sneeze.
18
Your thumb is about the same size as your nose.
124
You can't tickle yourself.
29
The largest cell in the human body is the female egg and the smallest is the male sperm.
682
The average person will go on a date at least 100 times before they finally marry.
33
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
The human body contains over a billion miles of DNA.
147
Babies crawl an average of 200m a day.
212