I had a heart attack 10 years ago and they put two stants, for artery blockage, and lately I lost 25 pounds from exercising about 1 and a half everyday for 4 months, I am 5'7 at 162 pounds, and I am a male that is 55 years old. Does jogging or hiking cause a heart attack, but when I do these activities, I have no pain, or a regular shortness of breath.