summerwilkins
Wed 22 June 2011, 09:13 pm GMT +0200
Did you know that when you sleep you are growing about 0.3in? But don't be happy yet, the moment you woke up you are shrinking back to your former height. Why? This is because that your cartilage discs are squeezed like sponges by the force of gravity when you stand or sit. Mad science, huh?