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
An average heart beats 100,000 times a day, pumping some 2,000 gallons of blood through its chambers. Over a 70-year life span, that adds up to more than 2.5 billion heartbeats.
73
On average, a human being will have sex more than 3,000 times and spend two weeks kissing in their lifetime.
161
Your thumb is about the same size as your nose.
124
Mushrooms are more closely related to humans than they are to plants.
47
The human eye blinks an average of 4,200,000 times a year.
233
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82