Hi all,Long time since I've posted. Been training for 10 years and have tried virtually every supplement under the sun. One that has always been a staple is any type of stim. I am a stimulant whore. I have a very large tolerance to stims and try to rotate pre workouts and what not so that I can still feel effects. One thing that has bothered me is that since 1,3 dimeth has been discontinued, it seems that every company is now throwing some type of yohimbine whether it be a certain alkaloid or Rauwolscine, into their pre workouts. No matter what type of yohimbe it is and dosage, any time I have ever taken anything that contains it, I feel like crap mentally and physically. I'm aware that there are many sides that people experience from it but mine have always seemed extreme. I literally get flu like symptoms, cold sweats, and mentally feel depressed or just uncomfortable. Anybody else experience this? Anybody know why?