Took another long walk around our long block last night, started out in twilight, finished in the dark, glad I took along a small flashlight. I may be overdoing it. My lower back was aching pretty good. Several times I had to stop and bend over to ease it. At one of these pauses, two guys working in a garage beside a house asked me if i was okay. I said yes, They added it looked like I was having trouble breathing. I siad breathing fine, back sucks. Once I got done and home and sat down, my back stopped aching. so today a shorter distance.