I've seen advertisements for boot camp and other fitness classes for children, targeted at improving fitness rather than having fun or learning something. (strocel.com)
I've been a dancer in musical theatre for years and although I've taken various other fitness classes, I've never seen results faster than I have with Pure Barre. (purebarre.com)
Beginners are advised to watch the instructor closely to pick up the moves, and unlike other fitness classes the instructions are mainly visual rather than vocal (except for the «woohoos!» (womenshealthandfitness.com.au)