I am not a doctor, nor do I play one on TV, but do remember reading somewhere that it's not good to just lie around not sleeping for hours on end, because it sets a bad mental precedent or something. Once you've been lying around not sleeping for a while, you're supposed to get up and find something else to do until you feel ready to have another crack at getting to sleep.
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Hope you slept in the end and were able to sleep in this morning.
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No, not really.
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