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 strangers in your dreams are actually people that you've seen in real life.
50
It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
165
Your thumb is about the same size as your nose.
124