"Habituation is like cooking sauerkraut for dinner one evening and noticing the odor in kitchen as you do so. Soon the odor seems to disappear because you have gotten used to it. You have habituated which means to become accustomed to something through a prolonged exposure to it. The odor is still there, but you do not notice it. If you go out for a walk in the fresh air after dinner, when you return you will once again notice the odor, and the habituation process starts over."