Win six 45-minute open-gym sessions at Philly InMovement . The gym is open to jump, climb and tumble without instruction. A great way to get out LOTS of energy.Sessions are first-come, first-served; caregiver supervision is required. Philly InMovement holds classes, summer camps and birthday parties at its new 2400-square studio, located at 500 Kenilworth St. (between 5th & 6th streets, and Bainbridge & Fitzwater streets).