Hi,
Im a 31 yrs old male who has been meassuring his heart rate with an iphone and with tactile methods over the vein. Currently my resting bpms is between 48 and 58, 3 days ago i woke up with 42. Im not an athlete, im veggetarian, exercise around 70 mins per week. I smoke, drink and occassionally do other drugs like lsd and cocaine. I get this awful weary heart kind of ache when I do cocaine and my left arm begins to get numb, when the effects are gone, so are those symptoms. But i get a strange feeling on my left chest side during regular days...I used to do a lot of coke but now just do it maybe once or twice a month and consume very little, much less than half a gram.