Congrats!
I have recently had body strength on my mind as I have been doing some projects that require some muscle. In my 20's and 30's I regularly worked with sheets of MDF (100-120 lbs per sheet). I could grab a sheet, carry it to a saw, and prop it up and rip it without help. A couple weeks ago I picked up 10 sheets for my theater project and I struggled to even help my son lift them in and out of the truck. I could barely drag them around the shop let alone pick one up! And I picked up some 5/8 drywall, and the two sheet stacks are crazy heavy, and even with help I was struggling. Again in my youth I was tasked with moving an 8 foot high stack of 4x12 5/8 drywall and I moved it all by myself, two sheets at a time. Today I couldn't even lift one of those sheets without help. And I am not that old!
The last few times I had to dead lift something over a couple hundred pounds I hurt my back, or shoulder, or some muscle or joint. Any more the thought of going to lift things on purpose makes me sick to my stomach, I can't even think about going to a gym to lift stuff.