Our instinct tells us to express rhythm. Just as children bob their heads to music and senior citizens tap their canes to the beat, dancing comes naturally to both young and old alike. Some form of social dancing has probably existed since the beginning of time, moving from ritualistic dancing to social interaction for pure enjoyment. Modern ballroom dancing has withstood the test of time and is now more popular than ever. Both American and International style ballroom dances are divided into the following categories: Rhythm: Bolero . Cha-Cha . E Coast Swing . W Coast Swing . Hustle . Lindy Hop . Mambo Merengue . Polka . Rumba . Salsa . Samba . Two Step Smooth: Foxtrot . Tango . Viennese Waltz . Waltz. Quick Step