I have a small shop (18x 26) insulated, but good for an engine rebuild every year. I have a pellet stove, window a/c, engine hoist, grinder, and a valve grinder (yes, I still butt grind valves, no adjustable lifters), air compressor. I have my drill press and metal cutting/forming equipment in my house basement shop. So good exercise up and down for some projects.
I have to jack up and use stands for pulling engines and usual work (brakes, pulling engines, etc.). More exercise. I have a buddy that does welding for me.
The only thing I could use is someone to cleanup and put tools away at the end of the day Because when I use a tool I lay it on the nearest flat surface. At 80 I never remember where I put it
john