Where did you get the idea I thought the heart muscle has anything to do with a "soul"? I was using that as an example that it was merely an organ. Give me a break, you don't feel just adrenaline or excitement but all types of emotions in your chest area. I don't feel love or sadness in my gallbladder. Sounds like bullshit to me.
Explain why.
I'd like you to cite evidence that you feel any emotion in your "chest area." And, assuming that you do, what do you suppose originates the "emotion?"
The reasoned explanation is biochemical, which the brain associates with various emotional responses to various social and environmental situations. For instance, the release of adrenaline when you are angry, excited by a first kiss, scared by a near fall from leaning back in a chair, etc. Not a single emotion has been shown to exist without a biochemical cause, including "sadness." And not a single emotion has been found to occur before the relevant biochemical action has taken place.
There's no soul involved. Just chemistry.