City Boxing in downtown San Diego's East Village has operated from 14th Street since 2001, making it one of the longest-running combat-sports gyms in the city. The facility runs more than 40 structured classes per week across boxing, Muay Thai kickboxing, and Brazilian jiu-jitsu, covering the stand-up and ground-game spectrum that produces the joint and soft-tissue demands managed by Spine & Sport Physical Therapy - Gaslamp. A Carlson Gracie black belt heads the BJJ program, running separate gi and no-gi tracks with a formal belt-ranking system. The boxing curriculum routes every drill through fight-specific technique — pad work, heavy bag combinations, and supervised sparring — building skill sets that layer on top of the strength-and-conditioning base at Hardcore Fitness Downtown San Diego. Full competition prep for amateur and sanctioned fighters represents the gym's highest-level output, with corner teams assembled from the same coaching staff that trains the general membership.