@lstrhit
Yes one of my first question was on exercising. My heart failure doctor said: "25 years ago we would have told you to go home and rest." "Now we want you to exercise for you body fitness and maintaining heart strength."

I asked about level and I was told you be the judge of what feels okay and what you can do without issues. So really other than no longer jogging was doing all that I wanted to do. I found jogging to much for me. It would require I breath through mouth to get sufficient air. But I also have an old herniated disk that really bothers me with any feet pounding.

I wound up doing fast walking when doing Sprint Triathlons. I found I could breathe in through my nose and out through mouths which tells me I am not overdoing it. When I finished the race I was not out of breath or breathing hard just wiped out.

My exercise regiment if I cannot breath in through my nose and take deep breath and do an long exhale through mouth I know too much for me and slow down.

I told my heart failure doctor about this and he was happy with my explanation of how I judge my exertion level.