On average, someone in the US suffers a stroke every 40 seconds; someone dies every 3 minutes from stroke.
57
In one day, adult lungs move about 10,000 litres of air.
11
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
It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
The record for the longest scientifically documented period without sleep is 264.4 hours (eleven days).
15
Every hour one billion cells in the body must be replaced.
17