$trainer_profile = [ 'first_name' => '', 'last_name' => '', 'certifications' => '', // CSCS, NASM, etc. 'specialization' => '', // Strength & conditioning, pitching, hitting, etc. 'facility_name' => '', 'city' => '', 'state' => '', 'email' => '', 'phone' => '', 'notable_clients' => '', // Players they’ve trained ];