When you sleep, you get longer by about 8 millimeters!

Lorsque vous dormez, vous grandissez d'environ 8 millimètres !

When you sleep, your cartilage discs get strained like sponges by the force of gravity, which causes an growth of about 8 mm in the height of the sleeper. This height augmentation is only temporary, in fact, the next day you regain your former height.