One of the first things I work on with many of my clients is learning to trust their bodies. Most Christian communities teach people that our bodies are suspect. Often we're taught that our desires for food, pleasure, and happiness can all be overdone if we're not careful, and lead to gluttony, lust, and avarice/greed. Most of us are already aware of how our churches have taught us to not trust our bodies, but this lack of trust is also coming from our general culture.
When I think back to my public school education, I remember that my life was dictated by bells. Each year I would look at my schedule and see when my lunch was... 11:30 or 12:00 or 12:30. I would be discouraged from going to the bathroom unless it was between classes. I was forced to wake up to an alarm most days.