MM, your heart is the nerve center of the whole body... you may think that your BRAIN is the nerve center of the whole body... but it's only the nerve center of the NERVOUS SYSTEM.
Why am i telling you this... well... when you experience... stress.. your heart "ritmo," can become erratic. if its not erratic... it atleast becomes constricted due to tension. WHEN your heart has palpitations or emotional pressure... well.. all the nerves "ring" resonate with the same tension as the heart...
AND GUESS WHAT ARM PEOPLE WITH HEART ATTACKS GRAB IN UTTER PAIN???
I googled heart attack... and i only saw people grabbing their heart... this is wrong... people grab their left arm... its the place with the pain finally echoes.
STOP BEING ANXIOUS!... you cant stop stress but you anxiety is a CHOICE...