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.
Most sensual dance
The most sensual dance of modern times is without a doubt the Tango. It originated in the 1890s in Argentina, but it quickly became very successful in Europe.
Muscular strength
Dancers have increased muscular strength, endurance and motor fitness. (No wonder professional dancers are today regarded as athletes.)
