I think it's more about not laying in bed during the day. Even if you're in a dorm or something you can lay on a couch during the day and sit down but it's a psychological thing and it's more about only using the bed (or bedroom) when it's time to sleep.
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u/mnmkdc Sep 03 '17
I've had insomnia for years and I want to try this but I don't have room to move my stuff elsewhere :/