Rachel, that is so interesting - I really hope it works for you. You could put it back in after the marathon, right? It looks very nice on you.
I have always been a very medical person, but in recent years have come to appreciate a various forms of health care. I believe the strongest form, is what a person believes works best for them. I work in an ER and in the case of migraines, you will see in the course of one night, multiple people with them just as you will see more babies delivered on a certain day over another. We are linked to this planet and it impacts our minds and our bodies - our "chi".
Just one grain of sand's opinion among millions.
T