I don't get like this all the time, but I have done, and my mum gets it a lot. You go to bed at reasonable times. You're tired all day, and even when you're sitting your muscles relax and you could easily doze off if you shut your eyes. So that night you get into bed thinking that all this tiredness means your body wants you to sleep, but you find that you are uncomfortable, tossing and turning, hot, and unable to sleep most of the night. Then it starts all over again the next day. It's as if your body wants you to sleep during the day and won't let you sleep as soon as it gets dark or something.
Thank God I don't get this too often. But is there a psychological explanation why this happens? I have tried looking up about this on Google but the people asking were either pregnant, elderly, on meds, do different shifts at work, drink a lot of alcohol, take drugs, etc etc etc. I'm talking about a healthy adult with regular/part time working hours, doesn't smoke or drink or is on any drugs or meds, is not pregnant or has nothing else interfering the person's body clock (like being pregnant or looking after a baby).
I would just like to know if there is any scientific or psychological theory for this.
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Female