The top three most efficient modes of human-powered transportation are (in no particular order): Flintstone cars, stationary bicycles, and a palanquin carried by the various monarchs you've conquered and overthrown. Opt for the most trusty and immobile of the three with today's Groupon: for $40, you get 30 days of unlimited classes at Kinetic Cycling in Brentwood (a $300 value).

Putting an upbeat spin on cycling, Kinetic amps up every class with modern indoor bikes and motivating, enthusiastic instructors. Cyclists mount the Keiser M3, a sleek bike that boasts monitoring technology for calories burned, miles traveled, current speed, and IQ. While the class pushes your body, the brain maintains its momentum by absorbing the upbeat beats and visuals of the studio's HD video flat-screens and THX surround sound.

Thirty days of unlimited classes accommodates stationary cyclists of all pedaling acumen, with a schedule of classes running seven days a week, often throughout the morning and evening.

Reviews

Kinetic Cycling was featured in an NBCLA 4 segment. Twenty-one Yelpers give it a five-star average, and Google Mappers give it an average of 4.4 stars.

• This is the best spinning location in LA and the best I've been to in the country – Betty Y., Yelp, 8/7/09
• Kinetic is fantastic! I have been spinning on and off for years, and Kinetic is the friendliest, cleanest, and most enjoyable studio in Los Angeles, bar none. The bikes are state of the art, they are cleaned after each class and the energy is motivating! Every instructor actually teach classes, not just ride [sic]. If you want a solid workout, in a friendly and approachable atmosphere, go to Kinetic, you won't be disappointed. – Google Maps user on 01/02/2010