Thanks to all for the kind and helpful replies.

My very ordinary CABG occurred in 2014 and I took rehab as long as they’d let me. I recall no guidance on subsequent. exercise. The current CPG Rx, as you probably recall, is 150 mins of exercise a week or 75 mins of more strenuous exercise. I couldn’t find an MD who could explain how to measure “exercise” or “strenuous exercise”, or whether this rule applied to us CABG vets. Google told me yesterday that “METs” are the measures, but not how to find my own MET output. I’d welcome any hints you’ve heard. A complication is that in rehab they put an upper limit on a pulse rate of about 125 or so (I’m 78). Thanks again!