If you live in Bucks County, PA, you know that the Newtown Athletic Club, or the NAC, is one of the premier fitness centers in the area, if not the nation. Just about any amenity you could imagine is available, and there are plenty of classes from therapeutic yoga and pilates to high intensity INSANITY and XTrain.

Recently, the NAC upgraded their spin bikes, and Schwinn master trainer Gregg Cook was on hand to teach spin instructors from the Philadelphia area how to use their new Schwinn AC Performance Plus spin bikes. Over 25 instructors were in attendance, and they were treated to a tough class as part of the demonstration.

Check the gallery for all the shots from the event.