Some heated flooring would be fine

I am moving a bit slow today after doing a heavy leg workout last year in the sand. I filled this big tote with sand plus dragged it walking backwards for 15 minutes, which is supposed to strengthen the quad muscles plus help aid the knees. I had an MRI done on my knees which showed almost no cartilage left in them, so now I am doing these exercises to make my legs stronger so I can avoid getting knee substitutements, and i want to keep playing beach volleyball however I need to get my knees better first with these exercises. The local company told me about doing these exercises plus how they helped him maintenance them after ruining them from installing radiant heated flooring for so many years. I guess if I am diligent with doing these each week a few times that I will be able to play again without damaging my knees any further. I carry heat pumps plus other Heating plus Air Conditioning equipment while in the afternoon at labor plus need my knees to be strong so that I can keep working for a few more years. I guess if I stick to the plan for a few more months I will be feeling a lot better plus can play more games without any pain. So today I am a bit sore plus will hit the local company a bit later to buy some things for my Heating plus Air Conditioning system plus maybe get some of that pain relieving gel for my joints today. Besides that, I guess today is going to be a afternoon of rest.
Hydronic heater