insane even thinking about games in your circumstances, but that's the way it is with Celtic.
Great luck with timing, good luck, get well soon.
Fair play to you.
Difficult one exercise, you never can really know what's going on inside.
A Marathon runner in Cork who was obviously seriously fit on the face of it, in his forties found out his arteries were in a really terrible state, like that of a typical 70 year old. He was told it was bad luck and down to genetics, he only found out because both his parents had died of heart attacks fairly young and so he went for a check up.
I used to do heavy weight circuit training for boxing, have since a kid but seriously wonder how smart the extremes all was now, especially on the heart, some 'experts' suggest it strengthens others the opposite. Think weight training is still good for health but not heavy weights especially as you get older. Like you say the problem with any training is how much, keeping it up once you start and not being stupid.
Seems as you say and some studies suggest that just a quick enough daily walk is likely the most natural and beneficial. The really old in Japan are all gardeners and never done any other exercise, just eat lots of those blue spuds
.
Yourselves, How did you first find out yourself you had a problem, or what made you go check?