The human body can only adjust to one hour of time zone shift per day. You have moved from GMT-8 to GMT, a difference of 8 hours. Therefore it took your bodies 8 days to adjust. You might stop being sleepy after only half that time, but your digestive and other cycles have not.
Today is Day 8 since your move, yes? I hope you're feeling better soon. :)
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Today is Day 8 since your move, yes? I hope you're feeling better soon. :)