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 >>/4258/
Same here. Most of the time I thought that's just what happens when you become undead. In most vampire movies the one who is bitten lies ill and half-dead in bed until their transformation is completed. But I admit that a few times I thought the spell might have been something malicious. Funny enough it get's better in the evening so maybe that's why vampires are said to sleep during the day.
> I might as well have hypothyroidism.
Honestly, it might be just a physical illness. There a bunch of conditions that fit the description, not only hypothyroidism. I haven't been to a doctor for ages so I don't know but it's very likely. Have you taken a check up or blood test? If not maybe you should. 
 I personally rather just die, and maybe that's the way forward in order to be reborn instead of trying to patch it up with qi and caffeine?