After age 30, the brain begins to lose about 50,000 neurons per day - shrinking the brain .25% each year.
55
You see your nose at all times, your brain just chooses to ignore it.
30
The average person's skin weighs twice as much as their brain.
131
All humans have the ability to see ultraviolet light, but it is passively filtered out by the eye's lens. People who undergo surgery to remove the lens can detect ultraviolet light.
21
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266
Staying awake for 17 hours is the same for your body as drinking 2 glasses of wine.
193
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