In addition to the concept of physical space, Hall also discusses personal space. Each of us is surrounded by a "space bubble", varying in size according to the activity or type of communication taking place.
Hall classifies these "space bubbles" or distances in four types (each with a close phase and a far phase):
Intimate Distance (Distance: Touching to 11/2 feet)
This is the distance of lovemaking, wrestling, comforting, and protecting;
Personal Distance (Distance: 11/2 feet to 4 feet)-
This distance is reserved for more than just a casual friend or fleeting encounter; however, it is a no-contact distance. 'Where people stand in relation to each other signals their relationship, or how they feel toward each other, or both. A wife can stay inside the circle of her husband's close personal zone with impunity. For another woman to do so is an entirely different story;
Social Distance (Distance: 4 to 12 feet)
Impersonal business or casual conversations can be carried on in this space. People are very much aware of the presence of one another, but they neither interfere with each other nor are they oppressively near;
Public Distance (Distance: 12 to 25 feet, or farther) -
A person at this distance is outside the circle of involvement. This is the distance reserved for public speakers and/or public officials or for anyone on public occasions.