My try on our homework would be:

New brain theme: For example I have an issue with self confidence, that would show in my muscles, the stability, maybe I would get back pain.

Old brain theme: For example for whatever reason I'm under the impression that I don't get enough food, this is a "chunks" conflict, and  that's why my digestion is acting up and I'm constipated. 

Did I get it?

Please correct me if I'm wrong.
Thank you!