The Behavioral Immune System is one of several parts of our immune system, according to author Dr. Norman Doidge (The Brain That Changes Itself). The innate and acquired responses, our skin (that protects us from invasion), and our behavior! The 'disgust' response prevents us from eating things that smell/taste/look bad. It changes our behavior! What else improves our immune system? Listening to positive podcasts or you tube videos! Reading spiritual or motivation books. Meditation and prayer. Yoga, QiGong, and even just walking your dog.
Boost your immune system everyday!