Cost: $10 per month, no contract required
What you get: The basics: Cardio machines (all with individual TVs and iPod hookups), express circuit training, free weights.
Extras: The gym's green focus: All plastic bottles get recycled, old tires make up the floors, and energy-efficient lights and AC are standard.
Find them: Mostly in Arizona and Florida, plus one club near Atlanta.
(Prices quoted for: 2765 N Scottsdale Rd. Scottsdale, Arizona 85257)
Cost: In New York City's Murray Hill gym, pay a one-time enrollment fee of $199.99, and $19.99 per month after that. The monthly rates are locked in for life.
What you get: Many no-frills gyms keep costs low by charging extra for fitness classes—or getting rid of them altogether. But membership at Boom Fitness, which has just two NYC locations, provides the usual (more than 100 exercise stations, 10,000 pounds of weights) plus all the fitness classes you'd like. Bootcamp, yoga, rumba, kickboxing, and spinning are all on the menu.
Extras: Towel service and one free personal training session with sign up.
Find them: In New York City
(Price quoted for:
Murray Hill, 4 Park Avenue, New York, New York 10016)
Cost: $150 per year (just $12.50 per month) for access to rec centers with a pool; $100 if you plan to stay dry. Six-month passes available for half the price.
What you get: It's easy to forget about these city-run gyms, but if you need the basics they'll do the trick: cardio machines, indoor tracks, weight rooms, and even full-sized indoor pools are included with your membership. Even some of the classes (zumba, yoga, martial arts) are free.
Extras: Take advantage of overlooked community center stuff—photography classes, pool, ping-pong tables—while you're there.
Find them: Across the five boroughs in New York City
Cost: In Minneapolis, where the company is based, a 12-month membership starts at $34.95/month.
What you get: The Global Access Card provides entrance to all of the SnapFitness locations around the world.
Extras: Personal training available at select locations.
Find them: Close to 2,200 gyms in the U.S., Canada, Mexico, Australia, New Zealand, India, and the U.K.
(Price quoted for: 250 2nd Ave So, Suite 282, Minneapolis, MN 55401; 612-338-3999)