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
Staying awake for 17 hours is the same for your body as drinking 2 glasses of wine.
193
In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
198
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266
The human brain uses approximately as much energy as a 10 watt light bulb.
120
The human sigh acts as a physiological reset button.
23
The human brain is very soft, having a consistency similar to soft gelatin or firm tofu.
13