Sleep tight

breathing problems, they said.

There was also evidence that fewer than seven hours

AS the worst of winter recedes, there is more incentive to resume outdoors exercise after months of huddling indoors.

That raises the question of how much or how little is required to bring health benefits.

In the UK, the NHS recommends weekly exercise of between 150 and 300 minutes of activity that increases the heart rate and makes you breathe hard.

The majority who don’t manage even the minimum 150 minutes will be glad to a night was likely to encourage people to overeat and crave fatty, salty and sugary snacks.