In my arms, about a 3; I'm pathetic. I can lift heavy objects, but I can't really carry them for any real distance; I tire very quickly and start to ache, and my arms shake for a while afterwards, making it very difficult to do anything.
In my legs...hmm, maybe a 7? I can't jog or run without getting out of breath almost instantly, but I can walk for hours and not get tired, and my walking speed is most people's jogging speed. I've always done a lot of walking, so I don't really notice. I just can't run, probably because I can't regulate my breathing properly.