I agree. Actually if you would imagine your heart (not literally the structure) it feels like your seeing something deep and wide. It is like, when you talk about your heart, you are refering to yourself as a whole. Example, when you said, "your heart is broken", not not merely pertaining to your heart or emotion, but u are actually pertaining to yourself, your entirety, your whole being. So, damaging your heart is simply damaging yourself.