If you ever struggle to get to sleep, you might find that one of the things that keeps you awake is worrying about just how much you have to do the following day, especially if there are tasks that you’ve started, but not yet completed.
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In fact, when Michael Scullin, director of the Sleep Neuroscience and Cognition Laboratory at Baylor University in the US asked one group of volunteers to write a list just before bed of everything they’d achieved that day, and a second group to write a to-do list, all about the tasks they had to do complete tomorrow and in the next few days, it was this second group who subsequently fell asleep more quickly.