 And while externally it looks like that is true, we have to keep in mind that the reward system has been completely rewired. The prefrontal cortex takes a hit. So their decision making and their impulse control is low. And then their amygdala. This is kind of the craziest part. The amygdala, which is responsible for your stress response, takes a hit. And so you're less likely to tolerate distress. So you go back to the addiction, which then damages the amygdala.