The Class Kranking
Where Go to krankcycle.com for locations
What it is A 30-minute cycling class for your arms. Krankcycles have hand pedals, where you'd normally find handlebars, which you rotate at various speeds and intensities. It's a great way to tone your arms, while giving your lower body a rest.

The Class Punk Rope
Where Go to punkrope.com for locations
What it is This hour-long workout is best described as P.E. class for adults set to rock music. The class alternates between rope jumping and conditioning drills involving lunges, squats and sprints. But these are no ordinary drills; they have names like Wizard of Oz and Charlie Brown, and related movements, such as skipping around the gym on the yellow-brick road and fielding softballs in place like Lucy.