At Courthouse Athletic Club’s six locations throughout the Salem area, the cheering of children and the warm pop of tennis balls against rackets fill the air. Stationary cycles, treadmills, basketball courts, and swimming pools help visitors to work toward fitness, train for triathlons, or teach a basketball to swim. Indoor and outdoor courts span the tennis center’s grounds, hosting matches and instruction sessions in both sunny and snow-laden months. Training opportunities are available for children and adults, with private lessons and group sessions covering yoga, Zumba, Pilates, cardio, tennis, basketball, and swimming. Courthouse Athletic Club also hosts children’s movie nights and a dance academy.