Without gyms, people would resort to outdated fitness techniques such as swimming and pushing Model Ts up slight inclines. Celebrate contemporary fitness with today's Groupon: for $49, you get an eight-week gym membership at Colonial Fitness (a $144 value), valid at either Colonial Fitness & Sports Center in Sinking Spring or Flying Hills Fitness on Love Road in Reading.

Colonial Fitness offers its members myriad body-sculpting, heart-pumping fitness options including group classes, weight-training equipment, and cardio machines to jumpstart a stymied fitness routine or improve a preexisting one. Patrons can choose from a wide variety of classes such as Pilates, cardio, and zumba, and the experienced staff will assist participants in developing strength and endurance while exposing them to total-body movements akin to those suffered in an intense round of Red Rover. Colonial Fitness' vast facility also features court sports such as basketball, volleyball, and racquetball, and encourages a break from the horde of humans with one-on-one personal-training sessions.