H.D.
I have the perfect place for you....http://rhythmsandfitness.com/leadingcastrhythmsandfitness...
The owners are Steve and Teresa (husband and wife) and they have classes to meet everyones needs including families. Look through their website and you'll see there is a ton for just the teenagers or they can join you in a Zumba class or a Chisel Fit class. I do their Boot Camp classes which are super intense, but you will define muscle, that's for sure! I love this place and highly recommend how family friendly they are!