A few weeks ago we had a discussion about biofeedback and if it can help or not.  My dr recommend this as a treatment for me and referred  me to the POTS Treatment Center in Dallas.  I trust him so I was happy to go even though I didn't understood how it would work. He told me it's to help control my heart rate through breathing. Then, I saw the thread and it created even more skepticism:  So I decided to do my own research and I was surprised to see there is a lot of science that this is a hel