Q About instructors / fitness celebs???

[Guest guest]

I was wondering when fitness celebs like Kathy , or Austin do a

Pilates/yoga, or kickboxing video do they get a personal trainer to train them

or would you see them taking classes at a gym, so they can gain experience an

knowledge so they know what their doing in the video? Would you see Kathy

in your belly dancing class or Austin in your kickboxing class at the

gym?

Geoff /Lady G