From the Functional Range Conditioning instructor directory and the GMB Fitness certified trainer list. Both organizations publish their credential holders. The roster JSON merges them and groups specialists by city for the directory build pipeline.

Kinstretch is a group mobility format taught by FRC-certified instructors. The kinstretchInstructor count per row captures how many instructors in the city are certified to lead Kinstretch classes, which is a stronger signal than general FRC certification.

No. The directory focuses on FRC and GMB credentialed specialists. A yoga teacher who teaches some mobility work is not the same as a credentialed mobility specialist. Including yoga teachers would dilute the credential signal that gives the directory value.

The recoveryFocus field captures post-surgery, athletic, geriatric, and general populations. Coaches with experience across multiple populations are tagged with all relevant focuses, and the template renders those as filterable callouts on each city page.

Each city still gets a page. The template emphasizes individual coach profiles when the count is low. Sparse cities still rank for local intent because the data is real and the credential signal is the same as in larger metros with more specialists.

FRC requires periodic recertification. The frcCurrent count per row reflects only currently certified instructors. Lapsed instructors can appear in a separate inactive section, but the headline numbers reflect only active credential holders for accuracy.

Yes. Each row supports a seminars field that lists upcoming FRC certification seminars in or near the city. The template renders that as a sidebar block, which helps athletes and trainers plan certification attempts as part of their development pathway.

FRC and GMB publish credential updates periodically. After each refresh, you merge new specialists into the affected city rows and trigger a rebuild. Cities with new Kinstretch instructors pick up updates and unchanged cities stay served from cache.