Also called living space or space bubble is the margin separating between our body and the rest of the world that allows us to feel secure and safe. Psychological experiments show that most people need a minimum setting of between 20 and 40 cm around your face. If someone invades this space in the relationship the person will recoil. Anyone can check it. I also have to say that this space is not equal for all. Thus the urbanites accept less space than rural people and we also accept less space for the intimate than for others.