jennys history teacher always sets the tempature in her classroom very low jenny always shivers when she is in class because she is cold now as jenny approaches the classroom she starts to shiver

Is there a question or is that it?

it has something to do with nerves building a habit. like if you work out for so long you create a habit of doing it and it is hard to break a habit. so if she had been going to that class for a long enough time she will create a habit that creates her shivering every time she nears that certain classroom