People who have trouble getting to sleep and staying asleep often find themselves running through a list of things they need to do while they are lying tossing and turning. Opinions vary on the merits of writing out a to-do list before you go to bed. Some people think that it just reminds you of what to worry about while others think that writing things down means you can go to sleep without worrying about trying to remember them. The latter theory has been given a boost by a study led by Michael Scullin, from Baylor University. The study involved 57 students who took five minutes before going to bed to either write down what they needed to do over the next few days, or list the tasks they had already done over the last few days. The study found that the students who made a to-do list fell asleep faster than the other group.
You can read the abstract of this article here.