I’ve been getting winded really easily lately, and also notice my heart pounding after only mild exertion. At this point I am still just telling myself that it’s in my head while consciously lowering my breathing and heart rates. Not a solution, but a bandaid that I can probably use til I’m dead :)
I think I posted my “getting back in shape” thing around the same time as you, just as it happened. I like following along with your progress, we have some similar hurdles - and I like your writing style.