First thing in the morning I can barely pull on a pair of shorts and socks, my back hurts so bad. seems to be a permanent thing now. As the day progresses and I keep moving around it gets better.
But like you say, one wrong move bending over and it's a shot of intense pain. I think that happens to many people and as you age you have to be careful, even if you feel like your in good shape. Ah young people have no idea what's in store for them. lol.
I remember maybe 2 yrs ago... horrendous storms through you area. Big trees downed on your driveway & property. But you managed to cut them down to size all by yourself. So, not so much sympathy for your back pains but a hell of a lot of respect for what you accomplish.