Theanine and sam-e have both proven to be very helpful to quell smoking urge when you are trying to quit.
This sounds like cartiledge inflammation. It needs to be properly evaluated - it maybe possibly caused by training. P-funk might be induced to consider this point and respond, if you ask him.
I irritated this tissue, on and off for years. I used to carry heavy bound journal tomes when I went off to meetings, or for lunch, during busy years in graduate research, before then, by toting textbooks around during long years as a University student. I managed to badly inflame the tissue on on side more than the other. An astute physician, who had observed this problem in other students, drily commented on the cause and suggested I get smart and use a backpack.
The condition resolved itself wtihin a few months, once the mechanical cause of the condition was removed.
In your case, I would look at benching as a possible culprit. If you are in martial arts, I would look at certain practices that might cause repeated assault to that area of the lower chest.
I concur - you need to see a different GP or internist. Your present physician isn't providing you with the level of service you need.
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