Meditation, Meridian And Muscle Tension

[cactus]

I have struggeled with tension headache for some time and I have been going to a chiropraktor. The tension headache is almost gone but I think that some muscles are tightening my meridians and the nerve system. The tension headache started when I smoked a joint and meditated. I remember that I started to feel unpleasantness and tightening in the optic nerve and following was a kind of a physical shock in the body. After that I got a pressure in my forehead.

When I have tried to meditate after that, I dont get in the "zone" anymore. It is like my meditation only consists of the setteling in phase. I dont get the energysurge after 5-10 minutes of meditation and I never feel the subtle tension in the eyes.

Does anybody know what muscles could be tensed up to cause this? Could it be the muscles in my eyes or could it maybe be the occipitofrontalis which manages facial expressions?

Any experience with this?

I used to meditate for 1 hour a day, but now I barely manage to meditate 20 minutes.

Edited February 9, 2017 by cactus
Wrong title