I don't know if this is catagorized as an official day-after effect, but the thing that's most noticable for me is that I seem to be attuned to a different frequency in my body. It's like that roller coaster feeling in your stomach, except sometimes its in your teeth or a foot or an arm. Mostly in the stomach though. Oh, and that guy that says 'don't forget your nipples'? He's so right. They are waking up.
Today the frequency seemed to intensify throughout my session – at one point culminating in an intense abominal twitch. There and gone. A mini build up that my body remembers and wants to repeat.
Going on five months, and maybe my first little mini p-wave!