@OmSigDAVID,
david, since you came by here from the "biceps" thread, I thought I'd share something here.
Going through this has actually kept my body from getting injured.
Last weekend I was walking/hiking on a greenbelt here, sometimes the ground is fairly rough.
I wasn't paying attention for a second and tripped on the tip of a rock buried in the ground.
I went down, hit my jaw against another rock, and got a pretty bad bruise across my chest. Also knocked my knee fairly hard on something.
Thing was, as I was going down, I was able to put myself into a roll that avoid getting my head hit, or hurting my hips, shoulders hands and feet.
I rolled/slide into an awkward place between the crook of a tree, some big rocks, and roots. Last year I don't think I would have been able to get myself out of that place without help.
I was a little sore at the time (but no problems in the morning), and one side of my pinky figure is still numb, but I know I would have been laid up in bed, had to have gone to the doctors, etc.