The tension and pain started in my meditation practice, but then expanded to my practice of mindfulness. Eventually it got to the point where I was no longer able to practice meditation, and then mindfulness as well. At the time I stopped, I had been meditating daily for 4 months using various meditation audiotapes(Radical Acceptance with Tara Broch and Another cd with several different meditations)
Well sometimes we need to try out a few different sets of instructions, and find which one works best for us. Maybe your current sets of audiotapes are not for you, even if they have helped some other people. Maybe you need some different guidance. If you search around this site there could be some links to some guided meditations you could try. Or you could visit a local monastery and ask for some advice, if the monks there are skilled in and follow the meditative tradition you are interested in.
I actually have the opposite problem to yourself. Mindfulness and meditation has released
so much stress and tension from my body over the years. Looking back to my early twenties when I began, I think my body was like a coiled up spring back then, compared to now. My issue is that difficult emotions
come up. But I see it as part of a healing process - they come up for my attention, so that I can heal them. Maybe the physical tension is like that for you, too. Your body is kind of telling you that it needs your kind attention.
This last bit is just my own experience, but my body sometimes 'speaks' to me, and pain is one way it does so. Once I was trying to give up smoking, and it was like, my mind
wanted it, but my body
didn't. Once, when I thought about lighting up, I felt my gallbladder contract slightly (I am not supposed to smoke at all, due to liver issues). It was as if it was saying, 'please, no, don't do that
!' But I did not give up yet. A few days later, I was about to light up, and I got this pain in my head
- as if my forebrain was saying, 'no, don't do that
to me again!' This time I actually listened. (I have given up properly now, of course.) It was a very interesting experience, how my own body (which is of course infused with consciousness) actually has an intelligence about it. Of course the body is made up of inert matter, but it is constantly in motion, pulsating, and enlivened at present. So there is more than *just* matter involved; consciousness is involved also. So once again, listen to your body, and be kind to it. It might be trying to tell you something.