Why do many people use drugs and alcohol even when they know better? Because with prolonged and extensive use, our brains become conditioned to use. That's why we sometimes say, "the brain of a user can be his worst enemy." Many different triggers - people, places and things, can cause a user's brain to crave, or "drool" for drugs. But knowing that that's how the body/brain system works, can save a recovering person from being ambushed by craving when it happens out of the blue. And combining that knowledge with a few simple techniques for coping with triggers can save that person from a relapse.