The winter Olympics in South Korea proved once and for all that American sports fans are not the only ones who take off their shirts in cold weather.
Why DO people tempt frostbite and other maladies to cheer on their teams? Because they may be Superfans, a type of person examined in a book by that name by George Dohrmann.
His sources range from sports psychologists to the man who gathered a huge cheering section for the Portland Timbers of Major League Soccer. Feel free to wear team colors when George Dohrmann visits The Exchange.