I've had some uncomfortable stomach feelings the next day after morning glory, especially when thinking of the taste. I know morning glory has vasoconstrictive properties, so I might venture to guess it could take a toll on ones body? I have definitely had afterglow from it aswell, but I do with most psyches like mushrooms, mescaline, lsd, dmt. LSD is definitely leaving me far more drained the day after lately. I sleep like a bear and feel half brain dead. I often get headaches day after Lucy aswell, but I attributed this to prolonged pupil dilation letting too much light, and just generally an overactive brain. Just my two cents.
Living to Give