Early fitness buffs were known to work out by angering Greek gods in hopes that they would be punished and forced to push boulders up a hill for eternity. Get in shape at your convenience with this Groupon.

$24 for 30-Day Passport Membership ($49.95 Value)

Passport memberships can be redeemed at any of the 158 locations in the Town Sports International network.

Washington Sports Clubs

Washington Sports Clubs, part of Towns Sports International's network of fitness loci, welcomes exercisers to a number of equipment-stocked facilities to help attain perspiration-soaked fitness goals at a convenient location. Strength-training gear such as circuit machines, free weights, and medicine balls filled with black holes mold muscles into chiseled depictions of physical might. Calories simmer and move to cooler climates after sessions on cardio machines ranging from treadmills and ellipticals to upright and recumbent stationary bicycles. Each club offers a schedule of group classes that draw from more than 100 fitness styles, including Pilates, yoga, and boxing, to keep members from jazzercising without a spotter. Each location thanks exercisers for sweating in its vicinity with special features, such as babysitting, though Passport memberships do not include pool access.