By the number of comments on this post, you can see this is a common trend as we begin to "weather" Things like heredity, diet, lack of exercise, stress, etc. are all things we normally associate with heart conditions. But even if you appear to have low risk factors, you shouldn't take anything for granted. I get regular checkups, bloodwork. My total cholesterol is 137. Last February, I just didn't feel well. Normally very healthy. Checked BP, and it was high. No other symptoms - chest pain, tightness in the jaw, radiating arm pain, nausea - nothing to indicate I was having a cardiac event. But something just didn't feel right. Short version, I had a 90% blockage in the right coronary artery and a 95% blockage in the right descending pulmonary artery. Two stents corrected the problem. Had I not insisted on finding the problem, or ignoring it, I wouldn't be writing this today.
Listen to your body, and if something just isn't right, find out. Nobody enjoys going to the doctor for tests, but that decision for me to request the angiogram saved my life. Get things fixed while you still can, before you have a crippling or life ending event. Thanks to all who shared their stories. Knowledge is power, and the things shared here are valuable information. May we all enjoy many more days afield.