Fingers prune underwater not because of them absorbing the water or washing away the oil, but because of an evolutionary trait caused by the brain to enhance the grip of your fingers underwater.
24
The human sigh acts as a physiological reset button.
23
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 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
198
You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
17
In one day, adult lungs move about 10,000 litres of air.
11