No history of serious problems for me, some irritating 'heavy' or thumping heartbeat periods in the past..probably stress related and used to get some very fleeting irregular hearbeat, almost fluttering but that's not happened in a good few years.
Yet yes, it has occurrd to me occasionally when I've been hammering myself that I may overdo it one day when my heartrate is high, I've lost a huge slab of fitness and that's not making it easy on me.
When I was 40ish I used to play squash. My doc said...be careful, there's plenty of folk die from overdoing it...i guess that's always stayed with me, the method doesnt matter, seriously overdoing it does.
But what's overdoing it ? Pushing is fine for me personally, but if I had anything unusual happen to my heartrate, I'd be extra vigilant ...we're not getting any younger


