I waited up to make sure it hadn't just spiked my blood sugar and sent me into a sugar high, but I didn't have any sugar high symptoms, I merely felt "normal" for the first time in days. I could pay attention, I wanted to do stuff, I felt normally tired at the normal time. So I'm going to start eating some potatoes and whatever else I find I tolerate well (excepting grains/legumes for the time being). And I won't worry about adding a small spoonful of sugar to my tea.
I don't think I've ever really been hyperglycemic. I've had my blood sugar tested immediately after eating a large, carb-filled meal and my blood sugar was NORMAL. I suspect, but do not know, that I may be generally HYPOglycemic. It'd be nice to have an actual professional I could ask about this, but I've ALWAYS had low blood sugar in the mornings (part of why it's so painful for me to haul myself out of bed). My average body temp is lowish--97.9 instead of 98.6.
I don't want to go crazy and start diagnosing myself with everything under the sun. I don't have *most* of the symptoms of hypoglycemia, just incredibly sluggish tiredness. I don't get lightheaded or pass out, but I will feel really weak and shaky if I've gone a while without food. While I suspect some of this might be the result of my former habit of loading up on carbs and sugary foods, over the past few weeks I've definitely learned that the tiredness is NOT an effect of that. I NEED some carbohydrates for fuel so I don't turn into a zombie.