The Class Rocket Workout
Where Crunch (crunch.com)
What it is A routine using a soon-to-be-everywhere machine called the Orbital 360. You'll spend 30 minutes sculpting your body with variable resistance poles that are anchored to a circular platform. The Rocket Workout includes strength-training exercises as well as stretches and Pilates moves, all using the poles for support.

The Class Bin Zhou
Where New York Health & Racquet Club (nyhrc.com)
What it is In 45 minutes you'll meditate and do breathing exercises, then perform a series of tai chi and qi gong movements and isometrics, such as holding a deep squat. You'll get a low-intensity cardio workout, but the focus is more on relaxation and increasing energy than on blasting fat.

The Class Indo-Row
Where Revolution Fitness (revolutionfitness.net) or The Sports Club/LA (thesportsclubla.com)
What it is A group exercise class on rowing machines that blasts calories. Set to energetic music, you'll perform drills—aimed to teach technique—and "race" against your classmates. The 50-minute workout will get your heart pumping, while toning your entire body.