That's a bit harsh, it's just a guided exercise class. Maybe it carried that snootiness originally but....my grandma did jazzercise at the senior center lol

An instructor plays music and calls out "dance" moves to the beat for everyone to follow. It's like square dancing or...Dance Dance Revolution.

Doing it as a group to music makes it easier to keep your pace up and it's kinda fun to exercise collectively. Same as step aerobics or running groups