In addition to offering yoga, cardio tennis, and a Get Fit Indoor Boot Camp, they will also be offering PeeWee Tennis. They have tons of different price packages which range from a $20 "drop-in" one time class all the way down to a bundle of 36 classes bringing the price per class down to only $9.
Check out their website here for more info. The Fitness Group is located at The Performance School at 750 Concourse Village West. They can be reached at (646) 261-5207.
Sadly, until I pop this second kid out I'm mainly dedicated to the "order takeout Mexican and eat it on the couch while watching HGTV" fitness plan, but hopefully The Fitness Group will expand somewhere in the northwest Bronx soon...it seems like a great, affordable program for kids and adults.