The top 10 nearest audiences for Fitness Centers & Gyms span cosmetic services, fast casual dining, children's education, eyewear, apparel, pharmacy retail, automotive, logistics, and coffee — with only one fellow gym brand in the set.

Audience similarity here measures how closely two entities' audience compositions resemble each other. The shape is flat: scores run from 0.95 down to 0.90 across the top 10, with no single dominant neighbor pulling away from the pack. European Wax Center (EWC) leads at 0.95, followed by Chipotle Mexican Grill at 0.95, Children's Education at 0.94, and LensCrafters at 0.94. Men's Apparel (0.93), CVS Pharmacy (0.91), and Volkswagen (0.91) round out the mid-range. The lone same-subcategory neighbor in the top 10 is Club Pilates at 0.91 — every other neighbor comes from a different category entirely.

The subcategory mix — cosmetic services, fast casual dining, children's education, eyewear, men's apparel, pharmacy, automotive, transport, and coffee — points to an audience defined less by fitness interest than by a broad pattern of routine, service-oriented consumption across multiple life domains. FedEx (0.90) and Coffee & Tea (0.90) anchoring the bottom of the top 10 reinforce how wide that pattern runs.

The flat shape across such a diverse subcategory mix suggests this audience is a mainstream, multi-category consumer segment rather than a fitness-specific niche.