Originally Posted by Carbonfiberboy

I used to get something similar, but pain in left chest, no arm problem. Docs assured me it wan't my heart, maybe chest muscle or lung. Felt to me like it was that a blood vessel was slow in opening, because it went away after a few more miles of riding and didn't come back.

I started taking 1g of sodium nitrate every morning. You can get it food grade on Amazon. You'll need a gram scale. This opens up one's blood vessels, reduces BP, and is good for you.
https://trainright.com/nitric-oxide-...c-performance/
I've been doing this for a couple years. It's good.

Never use a mouthwash - it kills the bacteria you need to make NO.