The human brain uses approximately as much energy as a 10 watt light bulb.
120
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
In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
198
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
Our brains have a negativity bias and will remember bad memories more than good ones.
15
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
Unconsciousness will occur after 8-10 seconds after loss of blood supply to the brain.
93
One human hair can support 3 ounces.
191