Hi everyone, I was wondering what experiences you all have had with various pre-workout mixtures. I currently am back in the gym recovering from a fairly serious (for me at least) 4 month flare my weight dropped from 190 to 155. I lost about 2 years worth of work in the gym, ie: bench dropped from 285 to 120. My problem is my body cannot seem to tolerate my traditional pre-workout mixtures anymore, whenever I use the few I relied on I am in the restroom before I can even make it to the gym. Any help/insights are greatly appreciated. Thanks!