Hmm.
Through will power.
If you are willing not willfull and accept and use right effort, mindfullness, etc.
you can have a definite effect on your health.
If you know how and are properly trained, you can tune in on the source of the tension and relieve it. through varroius means of meditation, acceptance and body movements.
This is possible. I do it all the time.
But you do need to be aware of it and know how to do it.
In our tradition we are tought this if we have a Master and/or by our Dharma brothers and sisters.
Outside a Sangha, I don't know where you'd learn this.
Some preasure points do work though not as effective.
It also is ultamitely not answerable to ones own will.
Some things just have to be gone through in order to release them.
All acceptance is best.
So the answer, from my experience is yes and no.
Willing but not willfull and with training and awareness one can prevent or release most common stuff.
More serious matters too, but some of those need intense privacy or safety to do safely.
And some have to be felt in some way no matter what.
This is an interesting subject you posted Nero.
I hope I can answer this from my perspective as fully as possible.
Sara
