Need a playlist idea for your next group cycling class? Take your Spinning class back to the 80's with this selection of rock music. You'll ride over two big hills...great variety, good bike workout. / A Daily Dose of Fit
A Tough 20-Minute Bike Workout on Days When Time Is Short: Source: Corbis Images You might not have a full hour available for an indoor-cycling class, but there's no reason you can't get a great workout with this often-overlooked machine.
25 Playlists for Every Possible Workout Routine on the Planet