I smoked some type of K2 in 2011 one night. I think I might have done way too much and started feeling the increased heart rate , shallow breathing , etc. almost to the point where I almost called 911. The next morning, I just felt out of it and felt a little fogged. Anyway, I didnt smoke it for 8 months and then I smoked 3-5 other times when I was drinking, but I didnt take big hits and didnt feel any symptoms besides the high. Anyway, during Christmas break, I drank every night heavily for a month straight while I was dealing with relationship issues. When I went back to college, I started to feel my heart beating through my chest numerous times a day and I would focus on it all day long. I thought something was wrong with me so I went to campus health and got an EKG , chest x rays, blood tests, TB tests and everything came back normal. After a month or two, I still kept feeling my heart beat and I felt like it was irregular. It would beat a couple times at the same rate, then it would drop and start beating very slow. My resting BPM is about 52-60. So I went to my family doctor to get another opinion and he did another EKG which came back completley normal. Anyway, Im scared that this Spice might have done something to my heart. But now I also feel like it could be the fact that I dont play sports (used to be a Division 1 athlete) and drink more heavily and frequently. Im wondering if the alcohol intake is causing the hard pounding, anxiety , paranoia , etc. or if the K2 is to blame?