brush your teeth!

Foucault's talk about discipline and routinization has me thinking about all of the ways to take that framework over the top, to its farthest reaches, where routinization begins to seem like the most human tendency.  It's said that humans "naturally" categorize and classify things around them--is this true? What have sociologists had to say about this?  And when it comes to routines we are taught to maintain for our own benefit, what then of the power dynamics inherent in any such relationship? The value imposed on the dentist or parent who instructs a child to brush their teeth twice a day, for their own health? What of that kind of routinization?  Can we enter into analyzing the subjectivity of health, or is this a point at which we have decided that discipline is necessary?

When is discipline and routinization, or "exercises," necessary?