If the human eye was a digital camera, it would have 576 megapixels.
25
It takes approximately 12 hours for food to entirely digest.
93
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
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
A person can live without food for about a month, but only about a week without water.
156
A human being loses an average of 40 to 100 strands of hair a day.
133
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15