Yeadon, PA Indoor Activities

Sunlight streams into Urbanfront Pilates through the large, second-story windows, reflects off mirrors that cover entire walls, and illuminates hardworking exercisers tightening core muscles. The purple and green studio is home to eight different group classes, led by expert instructors who believe that a strong core is the foundation for full-body health. They walk customers through how to tighten tummies with various pieces of equipment, such as the Tower class's spring-resistance apparatuses or the Xtend class's ballet barre. In mat classes, students use only body resistance and mental images of the Vitruvian Man's hot cousin to aid in chiseling physiques. Dedicated to fostering community within the studio, Urbanfront Pilates hosts teacher training by Power Pilates–trained professionals who help pupils transform their passion into a livelihood.

The cello-shaped Verizon Hall serenades eyes with mahogany accents under the 150-foot barrel-vaulted glass ceiling of the Kimmel Center for the Performing Arts. With seats for 2,500 audience members, the hall immerses both spectators and musicians in the clarity generated by its premium acoustics, which absorb vibrations from the subway tunnel below with 225 rubber isolation pads and allow for precise tuning with retractable curtains and sound-reflecting panels. Seasoned jazz artist Branford Marsalis confirmed Verizon Hall's sound acumen when he told NPR it is "the best concert hall on the East Coast."

Inflated structures, slides, and games fill the climate-controlled environs of the numerous BounceU locations that speckle the nation. At each site, staff members closely monitor all activities as little ones traverse obstacle courses or pull on oversized inflatable boxing gloves. The crew also invites parents to join in on the fun, letting them bounce alongside their kids or make sweeping edicts from atop a bouncy-castle throne. In addition to open sessions, the indoor-play haven sets the stage for the Preschool Playdate program, where instructors lead games and activities. Special events include family-bounce night, which lets parents join in the bouncing or relax in the party room and do grownup things, such as eat marshmallows with a knife and fork.

Pilates is a low-impact, total-body discipline that focuses on the core torso muscles to help keep the body balanced, toned, and energized. Workouts utilize resistance machines, natural body resistance, stretching, and controlled breathing to build long, lean muscles while promoting physical and mental cohesion so evil slugs can't get between your brain and your ears. During three 30-minute private lessons at Star Pilates, your experienced instructor will meet you at your ability level to ensure that you complete each exercise for maximum safety and benefit. Each session focuses on a different set of classical techniques, teaching you the Pilates basics that will help you meet your goals, especially if your goals are to become better at Pilates or underwater moonwalking. Star's trainer Amy Berger is certified in Pilates by Romana Kryzanowska, the world-renowned protégé of the method's creator, Joseph Pilates.

After practicing a new way to combine balls with baskets during the pro lacrosse clinic, both newbies and enthusiasts of the sport can kick back and enjoy the sights and sounds of the LXM Fan Experience. When the blades of grass settle, Wale will get them jumping again with tracks like his Billboard-charting singles "Pretty Girls," "Chillin," and more. By then, the crowd should be plenty amped for the main event—the LXM PRO Lacrosse Game. On the field, dozens of the sport's best players, including Kyle Harrison and Joe Walters, will split into two teams and go goal-for-goal and stick-for-stick as they play for sheer love of the game—inspiring the crowd's aspiring youth athletes with rocket-powered passes, last-second catches, and thrilling goals. There's no cap for today's Groupon, so feel free to bus in with a team or carpool in with a family.

Arnold's Family Fun Center's 200,000-square foot facility buzzes with flashing lights, bright colors, and adrenaline-fueled activities suitable for all ages. Guests use softball-sized bowling balls to bust birds masquerading as pins during rounds of duckpin bowling, and black-light mini golf plunges putters into the depths of an ocean reef as they fight radiant octopi and pirates. More than 75 go-karts speed around two racetracks, and bumper cars let drivers explore the safer side of road rage. Inside one of the largest arcades in the area, guests try their luck at more than 200 arcade games, including favorites such as Deal or No Deal, Big Buck Hunter Safari, and Guitar Hero. A bounce area keeps young feet busy, and a pizza and salad buffet refuel energy reserves before rigorous games of laser tag.