I am trying all this already for years, but I just also don't gain any weight. I am quite tall and thin and if getting sick I am always on the edge of underweight and it feels horrible. I loose weight quickly, but gaining it back takes ages.
I eat a lot (and healthy), but also for me it doesnt work. I understand the urge to gain a few pounds, because for me personally I would also feel physically a bit better if I had a little reserve.
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