Many historical waves of dances were perceived as the "destructors" of the old way of dance. Examples of that can be found in the 1920's Charleston and the era of Rock music.
Peripheral vision.
Because of the need to maintain strict head position while dancing, doctors often prescribe use of dance for those patients that need to develop their peripheral vision.
Discipline
Dancers are known to be disciplined, focused and high achievers who tend to be successful students and hard workers.