I had a heart rate of 35 this morning. I am 20 and not very physically active because of my POTS. I end up in the ER often because when my heart rate is low I am so exhausted, and almost lifeless. Then they give me a saline IV drip, even though I drink lots of water and gatorade, and I take Fludrocort. It takes about three hours or so before my heart rate bounces back. I wonder if that is the POTS doing that. I had a normal EKG and Echocardiogram, but I was told that I have a heart murmer.