I had OHS (valve repair cum bypass) at age 69. It took me about two months before I could exercise for 30 minutes, at which point I knew I was ready for cardio-rehab. I think that course lasted another two-or-three months. During which and since, I've been exercising (cardio-machines, light weights, heavy bag, walking and/or combinations thereof) six days a week for 30 minutes or more. And I feel terrific. It is AMAZING how much better you can get. Stick with it; stay positive; listen to your doctor and don't over-do it. You've got decades of good stuff ahead.
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