Along with what other folks have replied so far, I've also been asked this by therapists so as to help me get back in my body. In other words, I was spaced out and dissociated while talking over a traumatic memory, by being asked to focus on resulting physical feelings, I had even more information to work with.

Maybe what I was describing was stuck and unresolved in me, when I added the information body sensations was giving me, I was more able to unlock stuff.