Many of us wake up during the night, no matter how tired we seem as we head to bed.
Waking up at around 3am can be a frequent occurrence for a number of us. But TV doctor Michael Mosley has a tip that could let us know what to do if we wake up and struggle to get back to sleep.
The award-winning doctor has had the science of sleep as his latest project, inspired by his ability to sleep anywhere, anytime when he was a medical student - including in a telephone box and, surprisingly, in a graveyard. But now, at 65, he says he struggles to drop off, My London reports.