There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
Staying awake for 17 hours is the same for your body as drinking 2 glasses of wine.
193
It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
The focusing muscles of the eyes move around 100,000 times a day. To give your leg muscles the same workout, you would need to walk 80km (50 miles) every day.
21
In one day, adult lungs move about 10,000 litres of air.
11
Held in farts enter your bloodstream and are bad for your body.
26
A person can live without food for about a month, but only about a week without water.
156
