Updated: May 27, 2019
"Your body believes every word you say," by Levine, Barbara Hoberman. I really like this one, it gives you examples of body issues and the messages it is saying back to you.
"Everything you need to know to fee go(o)d," by Pert, Candace. This one goes deep into our cells and how it holds our emotions. Tiny peptide and protein molecules known as endorphins and opiate receptors. Technical and very cool.