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! 
Cheerleaders have to be disciplined as their responsibilities range from cheering for a team as well as intense physical activities.
I guess it takes a lot of spirit and determination as well!