If you stop working out, it takes twice as long to lose strength than it took to gain it.
16
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.
22
The record for the longest scientifically documented period without sleep is 264.4 hours (eleven days).
15
In one day, adult lungs move about 10,000 litres of air.
11
When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23
Wearing tight pants can lead to impotence in men.
120
In Nepal, cow dung is used for medicinal purposes.
19
One or two alcohol drinks a day can be anti-inflammatory.
75