Hello, the other day for the 1st time as I was teaching a drum lesson sitting playing along with my student tapping with sticks on my lap and I got strange feeling in my left arm then a tightness in my chest..I thought I was having a heart attack..Prior to this happening I did 3 sets of 25 push ups on a break I had..The next day I was playing drums at someones house and I had to stop as the same thing happened but this time it was in both arms..The whole thing last like a minute then a few more to completely go away...As far as the feeling itself..It reminds me of the feeling you get when your foot falls asleep and you try to shake it out....I don't mean the pins and needles feeling but more of that ticklish fuuny bonish type of feeling.. Also an almost slight feeling of weakness like a hypo glycemic reaction..I don't know if I am hypo glycemic and I don't have insurance or the funds to get expensive test.. Also my chest kind of tightens up.. I am 5'11 around 205 43 yrs old..I don't drink or smoke....I try to eat healthy...I just lost around 15 or 20 pds in the last several months by changing my diet...I am going to try to lose another 10 pds I would like to get down to 195 or 190... Also my chest kind of tightens up.. I don't have insurance and am pretty broke lately so I thought I'd try online..One more thing, the another exercise I have been doing is hitting the heavy bag over and over until I am pretty tired and this totally works the arms and chest (or so it feels like it works the chest) so I don't know if that has anything to do with it...Has anyone had this experience or does anyone have any suggestions??? Thanks...