I had to get a froze head off a hose yesterday...no biggie, a couple of wrenches and it was off. Then I go to get up off the ground and pick up the wrenches and old head and TUG, there goes my back. Spent the rest of the day laying on the floor, slept on the floor and I am now propped up at my PC so I can work from home. Can't walk without using a kitchen chair like a walker. Same thing happened to me a couple of years ago...putting together a bed frame. Why is it a person and do tons of physical activity but then hurt themselves doing the most routine things? Yep, I am not a happy camper.