Like a tree house, a gym never lets nonmembers inside and always deflects frogs fired from the neighborhood bully’s slingshot. Hurry up the rope ladder with today's Groupon: for $19, you get a one-month membership, a customized workout plan from a personal trainer, and two $25 gift cards for friends or family at Anytime Fitness (a $148 value). Anytime Fitness, as the name suggests, is open 24 hours a day, seven days a week, and 512 days a year with nonstop security.

Novice calorie burners and ripped Michelangelo models alike can take advantage of Anytime Fitness’s one-month membership ($49), which equips bodies with enough treadmills, cycles, elliptical machines, and weights to make them fit enough to run a marathon inside of a swimming pool filled with mud. A personal trainer helps familiarize sheepish biceps with their new, confidence-boosting dumbbell friends and works with the new member to craft a personalized workout program based on the individual's specific health goals.

A bevy of complimentary perks are included with membership, including nutritional guidance, a T-shirt, meal planners, a diet tracker, and an Anytime Fitness gym bag to casually place in the middle of the table during a first date, subtly suggesting a healthy lifestyle. New members will also get two $25 Anytime Fitness gift cards to bestow on their best-loved friends and most useful acquaintances.

Anytime Fitness's open schedule makes sure you have no excuses not to get in shape—unlike its competitor, Nevertime Fitness, which only opens its single Barrow, Alaska, location during solar eclipses.