People have driven, cooked and even murdered in their sleep. Vincent Graff finds out more...

Outside it's midnight. Inside it's teatime. This must be why Rhodri Marsden is knackered.

The light given off by laptops, tablet computers and smartphones could be bad for you, an expert warns.

According to a survey, the colour blue is linked to calm, soothing feelings and is thought to slow the heart rate.

Sleep problems can drastically lower the fertility of young men, warns a study.

For many couples, the bedroom becomes a battleground as they wrangle over one partner’s snoring.

Doctors are using a device which stimulates muscles under the chin with small electric shocks to tackle snoring.

A drug promising a good night’s sleep without leaving you feeling groggy could be on its way.

Children who get less than nine hours of sleep a night struggle at school, research has shown.

Getting up during the night to go to the toilet leaves workers ‘notably’ less productive, researchers warn.