Why sports fans can feel an insult as a physical threat

A closer look

There is a biological reason why sports fanatics are willing to bleed for a team they do not actually play for. Psychologist William Swann describes identity fusion as a visceral feeling of oneness with a group, where the boundary between the personal self and the collective identity completely dissolves. Unlike normal group loyalty, fused individuals view an insult to their team as a literal threat to their physical survival, triggering the exact same fight-or-flight aggression as a soldier defending their platoon in combat.