Hi @mfenn I remember those first days after my first realization that i needed to get back to exercising. When i first had my Pacemaker/icd i was working a pretty physical Job but after my first heart Arrythmia my fear became real. I had to be shocked back into rhythm and that got me real nervous. So my team suggested Cardiac Rehab. They have a 4 point monitor on you while you exercise. So they can see how the Heart is doing while riding a bike or the treadmill. It was a a Cardiac Hospital so I knew any problems could be handled quickly. It was the hospital where I got it implanted. That helped a lot in realizing i could get back into working out.