The strangers in your dreams are actually people that you've seen in real life.
50
A cow produces around 200,000 glasses of milk in her lifetime.
373
Your body is creating and killing about 2.4 million red blood cells per second.
17
Cows can sleep standing up, but they can only dream lying down.
745
The Lion's Mane Jellyfish is the largest jellyfish in the world. They have been swimming in arctic waters since before the dinosaurs (over 650 million years ago).
12
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
31
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