Staying awake for 17 hours is the same for your body as drinking 2 glasses of wine.
193
Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
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
The left ear is more responsive to words of love and emotion whispered into it than the right.
40
Contrary to popular belief, plastic cutting boards are more likely to harbor bacteria than wood ones. New plastic boards are easier to clean, but ones with cuts are nearly impossible to completely disinfect, whereas wood ones absorb and kill bacteria, regardless of age or use.
13
You can't tickle yourself.
29
Your wounds heal faster if you lick them, you instinctively do this for that reason. Tears help, too.
20