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"But the logistics of this are all very, very complicated, not least trying to figure out everyone's sleep schedules!"

While a good night's sleep was important, "surprisingly little" was known about sleep in adolescence, said Prof Barbara Sahakian of the University of Cambridge.

"This drives home to us just how important it is to have a good night's sleep at this important time in life," she said.

For example, roughly 90% of the people who contacted the children's sleep charity Sleep Action for help in the last six months were mums, grandmothers and other women in the children's lives, its head of service Alyson O'Brien says.

I managed to grab an hour's sleep in some public toilets and had some power naps lying down on the trail.