Loretta Graziano Breuning is founder of the Inner Mammal Institute, which helps people manage the ups and downs of their mammal brain. As professor emerita of management at California State University East Bay, and as a mom, she was not convinced by prevailing theories of human motivation. She learned that our happy brain chemicals swing up and down because they have a job to do. When you know what they do in animals, you can make peace with your inner mammal. You can wire yourself to enjoy more happy chemicals and relieve more unhappy chemicals. Find out how at InnerMammalInstitute.org. Breuning is the author of Habits of a Happy Brain: Retrain Your Brain to Boost Your Serotonin, Dopamine, Oxytocin, and Endorphin Levels; The Science of Positivity: Stop Negative Thought Patterns By Changing Your Brain Chemistry; and I, Mammal: How to Make Peace with the Animal Urge for Social Power.