Working practices, technology and the 24-hour culture combine to reduce our sleep. Scientists in Canada have launched the world's largest study of the effect of lack of sleep on the brain. They want people worldwide to do cognitive tests online, to see how the amount of sleep we get affects our ability to function. More information: www.worldslargestsleepstudy.com Photo: Tired woman in a car Credit: Getty Images
A new study is looking at the impact of sleep on your brain power.
The number of tests carried out by the NHS to diagnose people with sleep disorders across England doubles in a decade.
According to a new survey, nearly half of British dog and cat owners let their animals sleep on their bed.