A doctor has gone viral – which sounds like the beginning of a dad joke, but isn’t – with a hack for getting back to sleep if you wake at 3am. Cognitive shuffling is apparently the remedy for a spinning mind in the middle of the night. “Work, money, kids, planning, scheduling, problem solving. Your brain is too active to let you sleep – in fact the stress of all these thoughts tells the brain that it’s not safe to sleep, you have to stay on high alert,” says Bradford GP Amir........

© The Guardian