I have a good physic, that, has allowed me to have been a cattle rancher, truck farmer, oil/gas rig rough neck, logger, contruction, roofing, plumbing electrical and many other jobs not listed.
Same job last 5.5 years, and while doing regular job, I alos recently bought used { $2000.00 } RV to live in an have had to install a whole set of associated home systems ---ex sewer line, digging trench for water line etc--- and cleaning roof to apply 3 coatings of elasto-meric and flex-seal .
But the real kicker, is that, since this RV is under a few large trees, and branches of all sizes do fall, I spent $500 in treated lumber to frame a minimal structure with rabbit wire fencing over the roof, to protect the EPDM membrane and the cheapo lightweight decking they use.
Actually, I had 8 days of vacation coming, and because of covid19, those plans changed, so I spent most of those 8 days building this framed rabbite fence roof protection, by myself. Yes that means a lot of ladder work.
I have to say, my last blood test said I had low red blood cell count and low platelets and other low related to blood, so iron poor blood --take Geritol, a early 60's commercial--- and I was actually amazed at how little I ate and how much I worked without and hurting myself. I did have to put on my left knee support the last couple of days.
Once the job was done, yes, I was burnt out, but next day went back to work. So yes, I would say that I'm in good shape, for the shape I'm in. :--))