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
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Your thumb is about the same size as your nose.
124
On average, a human being will have sex more than 3,000 times and spend two weeks kissing in their lifetime.
161
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Babies crawl an average of 200m a day.
212
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266
Due to the angle at which the optic nerve enters the brain, staring at a blue surface during sex greatly increases the intensity of orgasms.
252