 …we live in dynamic interaction with our environment. Sex differences are socially constructed because being raised as a girl or a boy produces biological as well as social differences. Society defines the sex-appropriate behavior to which each of us learns to conform, and our behavior affects our bones, muscles, sense organs, nerves, brain, lungs, circulation, everything. In this way society constructs us as biologically, as well as socially, gendered people. (Hubbard 1990: 138) 