From Wikipedia, the free encyclopedia

Sleep is the natural state of rest observed throughout the animal kingdom, in all mammals and birds, and in many reptiles, amphibians, and fish.

In humans, other mammals, and a substantial majority of other animals which have been studied by humans — such as fish, birds, ants, and fruit-flies — regular sleep is necessary for survival.

At lans sleeping is sometimes really hard, our new photographer Sauna went to investigate how swedes do IT at LAN.