MYTH BUSTING

Never wake a sleepwalker

Waking a sleepwalker was once widely believed to be dangerous because it was thought something terrible would happen to them. While nobody likes being woken up, the worst thing they will experience is confusion because they are not in bed!

Drink eight glasses of water a day

This myth is thought to have been started by the bottled water industry. In fact, some of us need as little as a litre of liquid a day, which doesn't have to be consumed as water. Food, soft drinks, milk, tea and coffee all count.

Being a bit overweight is unhealthy

It is often reported that serious health problems can be caused by obesity. However, people carrying an extra couple of kilos in weight might actually live longer.

You can catch up on lost sleep

During the week, your sleep might be disturbed by late-night study, noisy neighbours, or a night out. But forget about sleeping longer at the weekend-staying in bed too long is thought to make you feel more tired!