The bowels of compassion...I've no stomach for that kind of thing...I feel it in my guts...a touch of spleen...I can't get it out of my head...

If you go by the way we use lanmguage, there are quite a lot of aspects of our personality that we seem to associate with other parts of the body.

But we don't do it so consistently. When we fall in love we might offer our hand, and we might offer our heart, and the traditional marriage service talks about the body as a whole ("with my body I thee worship). But we rarely offer our stomach as such.