Habits of a Happy Brain: Retrain Your Brain to Boost Your Serotonin, Dopamine, Oxytocin, & Endorphin Levels

by Loretta Graziano Breuning

Cortisol is your body’s emergency broadcast system. Corticoid hormones are produced by reptiles, amphibians, fish, and even worms, when they encounter survival threats. It creates the feeling humans call “pain.” Pain gets your attention.