I am a 20 year old female and weigh in at 145. I have had problems with a high heart rate in the past and after multiple tests by my pediatrician she told me that I have an irregular heart beat but that it was normal for me. Recently I have had chest pain and feeling of anxiousness along with a resting heart rate of 120 on average. I've also had problems with my hands falling asleep until I pop my elbow or wrist which I can do at almost any time. I was diagnosed with Familial Hypermobility Disease in January but I don't see how an increased heart rate could be a symptom of that. I am not sure what this all means.