Is stretching a cure
In my osteopathic manipulative pain practice, i actually find that in many cases, tight muscles are not the root cause of pain; they are a result of loose ligaments in the spine, sacral, & pelvic regions.
Ligaments should prevent too much motion, but muscle should create motion. Loose ligaments can't do their jobs, so muscles tighten to do it for them. Prolotherapy
is often better than stretching.