Dailymail reports: Scientists think they have discovered the switch in the brain that tells our bodies when to go to sleep.The discovery, made by neurologists at Oxford University, could pave the way for a treatment to combat sleep disorders such as insomnia.The scientists think the switch works by regulating neurons, or nerve cells, in the brain. Described as a 'homeostat' which can tell when someone has been awake for too many hours, the mechanism fires when the body is tired.

Read the full story here