My back aches. Running didn't cause it but it definitely affects my running.
It started last Sunday when I torqued it putting my kayak on the roof of my SUV. It hurt for a few days but I was still able to run on it and managed to get in four good runs over the week to include a solid speed day on Tuesday and an 8.5 mile run on Friday.
On Friday night, I spent the evening doing some volunteer work to set up for a local marathon. Over a three hour span, I set up 1100 orange cones over 13.1 miles (out-and-back course). It involved a lot of heavy lifting and lugging with the stacks of cones in the back of a moving van and early on I started to notice my back flaring up. Two days later, walking around is OK but I am struggling to get out of a chair, pick something off the floor, etc.
Today was supposed to be a long run and it definitely did not happen. With a hilly half marathon next Saturday, I need my back to feel better. I've already taken two days off and hope that I don't need to take off too many more.