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

by Loretta Graziano Breuning

If you subject your body to pain just to get the endorphin, your body redefines what counts as an emergency. You have to keep subjecting yourself to more pain if you want to keep getting an endorphin high.