The same thing happens with drug addicts who’ve been clean for many years. If you put them back in their same environments where they used to do drugs, even without their ingesting any drug, being there turns on the same receptor sites in their cells that the drugs did when they were using—and that in turn creates physiological changes in their bodies as if they’ve taken the drugs, increasing their cravings.9 Their conscious minds have no control over that. It’s automatic.
