It doesn't hurt to test. This does two things: if reveals your limitations and it answers your questions/allays your fears. So, think about how to do this methodically, keep reasonable notes, and commence some modest activity to see how you bear up. You may surprise yourself. I have just been accepted formally as an ablation failure, and I have a lot of ectopic activity going on in the past four weeks. Still, I got up today and used a five-gallon bucket to hurry the evacuation of our 100-gallon spa. I think I carried out maybe 40 gallons of it inside of three minutes. My heart didn't skip a beat.