I was 60 when I started to have mild chest pressure. Didn't really bother me at first, since I thought it was my asthma, and it was a hot and humid July that year. After about a week, it got so that walking more than 20-30 feet left me winded and tired.
Finally, a Saturday morning, I decided enough was enough and drove myself to the local ER (just a few miles away) to see about a breathing treatment. The ER docs set me up with one, and did some blood tests. They came right back and said it wasn't my lungs. My heart was the issue.
They wired me up and all that, and an angiogram showed I had 3 blocked arteries with tiny blockages in the other 3. They transported me to the cardiac care unit at Maine Medical, in Portland, and after a few days monitoring and testing, the surgeons did 6 bypasses on me in an 8-hour procedure. Turns out I had blood clots that formed slowly and blocked my arteries.
Anyway, I'm fine now. Had a CT scan a few months ago, along with a chemical stress test and bloodwork, and my ticker is fine with no indication of further clots forming. So there's that. I'm not posting this for sympathy, but to show it can happen to anyone for any number of reasons.
I pray that the Angels of His Mercy will bring solace and comfort to all the coach's family and friends.