Dance is categorized as a performing art form involving purposefully selected movements although when I dance it's pretty random.
I also dance with random moves.
Dance can be defined by its choreography but when I dance it is basically because I hear a great song.
Choreography is quite beautiful but there is certainly something about a great song that makes you want to just move and go with it.
Other forms of human movement can be related to dance such as gymnastics, cheerleading, figure skating and martial arts.
These other forms of human movement sound like a lot of fun to do especially when trying to get fit. 
I agree and cheerleaders are so fit as their competitive routines range from one to three minutes with tumbling, dancing, jumping, cheering and performing stunts.
I admire them very much. They are so talented and disciplined!
Cheerleading
Cheerleading is an activity in which the participants (called "cheerleaders") cheer for their team as a form of encouragement. It can range from chanting slogans to intense physical activity. It can be performed to motivate sports teams, to entertain the audience, or for competition. Competitive routines typically range anywhere from one to three minutes, and contain components of tumbling, dance, jumps, cheers, and stunting.
Cheerleading originated in the United States, and remains predominantly in America, with an estimated 1.5 million
Dance
Dance is a performing art form consisting of purposefully selected sequences of human movement. This movement has aesthetic and symbolic value, and is acknowledged as dance by performers and observers within a particular culture. Dance can be categorized and described by its choreography, by its repertoire of movements, or by its historical period or place of origin.
An important distinction is to be drawn between the contexts of theatrical and participatory dance, although these two categories are not always completely separate; both may have special functions, whether social