Originally Posted by
ankietyjoe
I had EXACTLY that for ages. I came to realise (after absolutely no help from the Doctors) that it was stored up muscle tension. You'll probably find that your body is 'off' all over, that most of the major muscle groups feel tight/weird/sore/fatigued.
I don't know the exact science behind it, but I found that progressive relaxation and all over exercise (but not strenuous) really helps over time. Heavy lifting would probably make it worse in the short term, but I found getting out for walks every morning to be the most beneficial exercise to help alleviate this.