I am kinda like you OLDMAN, I was raised on a farm, and still do physical labor pretty much every day with building things and carrying supplies.
Last weekend I had to bust up 4.5 yards of concrete with a sledgehammer and then load it in the bucket of the tractor. I had a couple of pieces sitting there, so I started to load them, and my dad came over to help me. He started to pick one up, and couldn't do it, and I picked that same one up and threw it around like nothing. Plus, ask Jae, my dad is a pretty stout man for 50 years old.
The only thing that makes me sore is working out, but other than that, I feel like I could take on the world.