Get a pure indica strain man, or as much indica as you can, light up and stretch your muscles.
I like to lay flat on my back then stretch, massage your muscles gently. Basically do what you can to loosen up AFTER smoking.
Best medicine in this world for your problem. I promise you will feel better.
I dunno if you have ever used weed as a medicine.. but did you know its a medicine too
Light it up man