Personal space - made up of invisible bubbles that dictate how much space we need in different social situations - is dictated by our amygdala, the brain's fear centre. If a person gets too close, the amygdala will elicit a fear response to make sure we are ready to react in case the person tries to harm us.
Some people, however, seem to have no personal space, which could be dictated by personality or culture. But how does this really work and what consequences does it have in our day-to-day life?
Watch the new episode of BrainCraft and discover everything about space invasion and how our brain reacts to it.