At least don't carry ladders for a block and a half and back again.
We had a contractor at the North Campus who didn't have his own ladder, and he needed access to the back of a steerable satellite dish about eighteen feet across. The center of the dish is about twelve feet in the air and it's out in the middle of the large field at that location. So I fetched a twenty-foot fiberglass extension ladder from the building, and took it back several hours later when he was done. It's a long walk. I was a little sore that afternoon, and maybe a little more so when Tam and I went for her birthday dinner.
Overnight, my joints stiffened up and my back started to hurt. Today, well, I can move around if I don't go too fast, but my knees and elbows are sore and glitchy. My neck and back are aching. I'm out of aspirin but I keep taking acetaminophen at the recommended intervals and it doesn't seem to be doing much. And we're not even going to talk about my fingers, which have been problematic for several weeks already.
So that's a job I'm going to have to be more careful about doing, and maybe not try to haul the thing the whole way at one go.
Next on the list, retrieving the twelve-foot stepladder from the basement where some other contractors left it -- the basement with the ten-foot ceiling. I'm not even going to ask.