Wife has it figured out (besides the sleep), says I haven't been the same since I injured my hamstring back in June (and re-injured twice). I don't know why that would affect my upper body strength though, maybe it's all in my head.

So I'm taking a workout/walking break to let it heal, at least a couple of weeks, and keep the knee brace on as much as I can tolerate. If it's still bothering me Sept. 1st, I'm going to have it looked at.

Older gents, don't push too hard.