Hi, my husband and I workout @ the gym 2-3/week, eat healthy, are not overweight, no cholesterol, not diabetic, and do not smoke. But on 9/13, after a work out at the gym, he suffered a massive heart attack.  The Cardio Cath/angioplasty was unsuccessful and eventualy had multiple bypass/ open- heart on 9/15.  Doctors say it was a combination of stress and genes.