CRUNCH: Ruff Yoga gives new meaning to downward- facing dog. Yoga lovers bring dogs to this free 45-minute class–barking is allowed! In N.Y.C., Boston, Chicago and L.A. (crunch.com)
EQUINOX: Get low-impact cardio and build muscle with Kettle Bell Training. Participants swing cannonball look-alikes weighing 9 to 88 pounds. In New York, Chicago and L.A. in October. ($300 for 12 classes; equinoxfitness.com)
BALLY TOTAL FITNESS: Try revamped cycling classes, with their emphasis on proper form. Free for members in New York, Chicago, L.A. and Miami in October. (ballytotalfitness.com)
TOWN SPORTS INTERNATIONAL: Functional Strength Training lets you play with exercise toys like stability balls and dyna discs. In N.Y.C., D.C., Boston and Philly. ($169 to $199 for eight sessions; nysc.com)
