The study of human use of space, founded by Edward T. Hall.
Four zones:
1. Intimate (< 46cm): Lovers, family.
2. Personal (46cm - 1.2m): Friends.
3. Social (1.2m - 3.7m): Business, acquaintances.
4. Public (> 3.7m): Strangers, speeches.
Invading someone's intimate zone causes anxiety (like in an elevator).
Social
Proxemics
Personal space tells a story