People with eating disorders tend to have tortured and inaccurate perceptions of the way they look. According to a recent study, their real-life movements reflect those beliefs. When people walk through a narrow doorway, they turn sideways to avoid hitting the doorframe. In the study, healthy participants turned when the doorway was 25 percent wider than their shoulders. Anorexic participants, meanwhile, turned when the opening was 40 percent wider, grossly overestimating how much space they required.