Hello, I try to donate plasma, but I am usually rejected every time I go, due to my extreme pulse. I sit for about 20 minutes reading a book and listening to music, before I go to get my vitals checked. I also focus on my breathing, yet I can feel my heart beating out if my chest no matter how hard I try to control my anxiety. I used to be able to donate plasma with ease, but I have an extreme fear of getting my blood pressure taken. My pulse ranges from 115 to 145 BPM. I am a 19 year old girl of healthy weight, 120 pounds. I exercise daily and eat moderately healthy. How can I fix this issue?