Let's stop talking about my kidneys. I don't wanna be damaged...! :'(LOL, anyway, I just remembered something you may want to know: when I first started taking stims, the crashes were... just awful. I mean it was horrible and basically just as long or longer than the high. Couldn't sleep, felt -- I don't know how to put it. I mean literally like I had fried or zapped my neurons and they were just toasted, and I was all dead inside and depressed and bleak and bored and nothing was interesting and I just wanted to rest and I couldn't to save my life.If that still happened to me, I honestly probably wouldn't actually take meth anymore. I'm really not sure why I kept taking them, honestly. I think I just kind of forgot how bad it was until it happened again, you know. Then it stopped happening. Point is, go easy not just to avoid overdoing it, but because the price you pay after you crash is proportional without a tolerance. At least it was for me.