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
A new parent will lose about 1055.6 hours of sleep in the first year of their child's life - almost 44 days!
6
There are more bacteria in your mouth than there are people in the world.
60
The focusing muscles of the eyes move around 100,000 times a day. To give your leg muscles the same workout, you would need to walk 80km (50 miles) every day.
21
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
Crying literally alleviates stress and uniquely allows humans to decrease feelings of anger and sadness.
24
Cigarette smoke contains 4,800 chemicals, 69 of which cause cancer.
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