I had my MI at age 43. Other than _smoking_ weed (via a bong) daily I was in good shape with regular exercise, etc. (5+ miles hiking in hills every day with my dog, at the bare minimum). After 3 stents I became much more conscientious about all my intakes and activities. I reduced my weed consumption, but began to notice that I would get angina pain about 20 minutes after smoking. Not after hiking or biking, or any physical activity, but almost always after smoking. At first I wondered if it was coincidence, so I reduced smoking further. But that served to further confirm it -- I would get angina pain only after smoking, and practically every time.

So bye-bye to the bong and smoking. I quit altogether, made tinctures (which I grew to like), and edibles for a while, but then tried a vaporizor (this was 2006). In hindsight, the idea of smoking is now unthinkable to me. I have felt no cardiac symptoms at all since vaping instead. YMMV.