OMG, I didn't know that was a "condition" ... my doc says I have it but just to get up slowly and be careful. LOL. Small world. I found this: Postural orthostatic tachycardia syndrome (POTS, also known as postural tachycardia syndrome) is a condition in which a change from the supine position to an upright position causes an abnormally large increase in heart rate, called tachycardia.

Wow I have never met another person with POTS but I have it. It just means that when you change positions or stand up your heart will race. I take a beta blocker for mine and sometimes I can feel it race but a lot of the time it doesn't bother me. I haven't really researched the long term effects but I plan to soon. Just diagnosed last year. Have a great day!