Well, this is quite the experience already.
The first and biggest thing that started happening was my dreams. A couple/few years ago, I had a lucid dream every other night, then it simply... went away. Now, for the past several months, I barely remembered one dream every month.
Now, I didn't notice it the night before last (it happened, I just didn't notice it at first), but last night was especially vivid. I remembered everything upon waking up. Well, a lot more than usual, at any rate. I also remembered
multiple dreams. That hasn't happened in a long, long time! This is brilliant! Now I want to become lucid again, but this is a blessing in and of itself! I pretty excited to go to sleep, oddly enough.
I also seem to dream/day dream as in a real dream. I'm still conscious, but I'm dreaming in my mind, seemingly with as little control as I normally have in my non-lucid dreams. Very odd.
I have noticed a slight overall energy boost and awareness of my thoughts, but nothing too exciting. Still, this is very nice.
The oddest thing I've noticed is the LACK of something: I don't have any detox symptoms yet, save one. It's only day three, but there's no headaches, nausea, etc. The only thing that's different is my digestive system seems to be working in overtime. By that, I mean it grumbles... a lot. Kinda funny, actually. I don't think this is cause for worry, though.