Green House

The past couple weeks I've had a nagging lower back strain. Nothing major, just an irritating soreness in the muscles on the lower right side of my back. I realized mid week that it had resolved itself and my back no longer hurt. If you've ever had a back strain you know what a relief that is.
Yesterday, I helped four of my friends dismantle a large green house and load it on a trailer to move it from Anchorage to Wasilla. The bottom half of the walls were standard 2X4 stud covered in 1/2 inch plywood on the inside and out with the outside plywood covered in log siding.
The side walls were 12' by 4 ' and heavy enough to take 4 strong men to move them. You guessed it, I reinjured my back. It's at least 4 times as bad as it was before.
This morning I had trouble tying my shoes. Now I'm sitting in my office, the pain dulled by Advil, but still there. I'm moving like an old man or like someone with a sore back. It's hell to get old.