Following up the Insomnia topic, here are 20 things you did not know about sleep ^^
read all: http://www.discover.com/issues/jul-06/departments/20thingssleep/14- The idea that it is dangerous to wake a sleepwalker is a myth. Given the things sleepwalkers get up to do, like climbing roofs and fixing insanely large sandwiches, it is probably more risky not to wake them.