Lately, I have noticed an almost constant discomfort in my left shoulder and upper arm - even though I haven't been doing any arm or shoulder exercises (It isn't extremely painful, but rather annoying actually). I've noticed in some other posts that there are others having this same issue and I am wondering if any of you know what causes this and what, if anything, can be done to make it go away.
Lately, I have noticed an almost constant discomfort in my left shoulder and upper arm - even though I haven't been doing any arm or shoulder exercises (It isn't extremely painful, but rather annoying actually). I've noticed in some other posts that there are others having this same issue and I am wondering if any of you know what causes this and what, if anything, can be done to make it go away.