Hi everyone, I got a question. I'm looking into preworkouts and am wondering if it'd be good for me. I know I should ask my Dr. But honestly I hate the visits. When I deink energy drinks such as rockstars and redbulls for an energy boost, it gives me irregular heartbeats and chest pain. I can, and do drink black coffee almost all day, everyday, so it isn't the caffeine that causes the problem. Would preworkouts do the same as energy drinks? Thanks.