Global Fitness & Recreational Sports Centers Market Size, Share & Demand Report By Center Type (Traditional Gyms, Boutique & Specialized Studios, Recreational Sports Centers, Wellness & Holistic Clubs, Mixed-Use Health Clubs), By Pricing Tier (Budget, Mid-Market, Premium), By Mode of Access (Membership, Pay-Per-Visit, Hybrid, Digital-Hybrid), By User Demographics (Youth, Adults, Middle-Aged, Seniors), By Region & Segment Forecasts, 2025–2030