I have been working with my dad since he recently retired at 62. He is still in prety good shape. Though he knows his limits most times. He stared working on what to do if knocked down. Shooting from a downed postiton, and getting back up while keeping the target covered.
It seems to be a good starter point. We have also worked on seated in the car draw and fire as well. Arthritus is his biggest limiting factor. Seems he is making the ibuprofen makers richer every day.
I almost fear what is going to catch up to me. At 35 I burned the candel on both ends for a long time. Have had one hip shattered when I was a kid, had more broken bones than I care to list, as well as have been shot. Also the constant falls from breaking horses is already catching up to me in my back. With a case of gout thrown in for good measure.
No matter how many times you do it and nothing happens it only takes something going wrong one time to kill you.