hi, im used to doing alot of excercise ( fitness Freaks ha) but ive noticed lately im getting like palpitations when i excercise alot, or i will hear my heart beat really loudly. I have been the doctors about this and he said it could be anything like lack of sleep, anxiety etc... he measured everything to do with my heart and said it was fine. Does anyone else get this and if so have you find any techinques to get rd of it. Thanks Chris.