Like a tree house, a gym never lets non-members inside and always deflects frogs fired from the neighborhood bully’s slingshot. Hurry up the rope ladder with today's Groupon: for $29, you get a 29-day membership and $29 toward programs or personal training at Healthtrax (a $59 value). Choose from the East Providence, North Dartmouth, or Warwick locations.

Healthtrax's fitness and wellness centers each house an impressive array of next-generation fitness gadgets within their more than 30,000-square-foot temples of health. Patrons pump up strength with free weights, give insubordinate calories their walking papers with cardio exercises, and exercise with fluid grace in the warm-water pool. Usurp the tyranny of boring routines with one of more than 60 group fitness classes weekly, which include aquatics, cardio, yoga, and Pilates; or take to the court with an invigorating game of basketball or racquetball. Healthtrax memberships convey a multitude of benefits upon the bodies and minds of their members, with amenities including advanced training studios, free trainer assistance, changing areas with lockers, basketball courts, an aquatics center, a youth activities center, and plasma-screen TVs on the main fitness floors.

Groupon holders also receive $29 to put toward any services with a fee, such as swim lessons or birthday parties, or the $29 credit can go toward individual or group personal training. The centers also welcome kids with an assortment of services, such as KidZone programs and baby-sitting. Programs vary by location; call or check the local website for specific information.