I sometimes get random pain in the heart and if I stay still and hold my breathe it dosnt hurt but if I move about and breathe normally then it hurts, I'm 13, healthy, sporty, girl, i have had them since i was very little. they tend to last no longer then a minute, they don't happen when I do something in particular one happened when I was riding my horse, once when I was climbing a ladder and once when I was laying in bed, it also feels as if my hearts out of beat,
Thankyou x