It turns on your lizard brain. If you are trying to drop PMO, drop coffee first. You will have it way easier, probably you will lose all interest in pron and masturbation. Replace your habit with books. If you drop coffee, PMO and add books (GOOD books like history of the world, your country, something wide), You will literally transform from animal in cage to elite unit of the world. If you are interested learn more about coffee and how it destroys your life. Gl.