What about your brain? Lol. I stacked the last couple days, but only once per day coz I'm afraid to do more than that. And my head feels "funny", like I got dumb or something. It's hard to describe; I'm functional, etc. but my brain just feels whacky.
and then there's the jittery thing I get too. I did sweat like a banshee, both days that I took it. But I'm not sure I'm gonna stick it out. We'll see.