The bodybuilding and gym mechanic — a defining RPG-lite system from Grand Theft Auto: San Andreas (2004) — is one of the most frequently requested returning features for Grand Theft Auto VI. In San Andreas, Carl "CJ" Johnson's physical attributes (muscle, fat, stamina) were dynamically influenced by diet and exercise, with gyms in each major city offering weight training, treadmill cardio, and three distinct hand-to-hand combat styles (boxing, kickboxing, mixed martial arts) (Wikipedia, 2024a; Wikipedia, 2024b). This report assesses the original mechanic's design, its reception, and the plausibility and expected shape of its return in GTA VI, where a Bonnie-and-Clyde dual-protagonist structure and Rockstar's RAGE engine offer opportunities for a far more granular implementation than was possible on the PlayStation 2.
Grand Theft Auto: San Andreas introduced role-playing elements unprecedented in the series, allowing players to customise CJ's accessories, clothing, hairstyles, and tattoos, alongside a body-condition simulation. As the Wikipedia entry for the game notes, "Balancing food and physical activity impacts CJ's appearance and physical attributes; eating and exercising maintains health, while losing muscle lessens combat effectiveness" (Wikipedia, 2024a). Three styles of hand-to-hand combat — boxing, kickboxing, and mixed martial arts — were taught at gyms located in Los Santos (Ganton), San Fierro (Garcia), and Las Venturas (Redsands East) respectively, each yielding a distinct moveset usable across the open world (Wikipedia, 2024a).
The mechanic operated on three primary axes: Muscle (increased by weights, decreased by inactivity/insufficient calories), Fat (increased by overeating, particularly fast food, and decreased by cardio), and Stamina (increased by sustained cardio on treadmills and cycling). These statistics directly affected CJ's silhouette in real time, NPC reactions (especially "respect" from gang members and dating prospects), melee damage output, and sprint duration (Wikipedia, 2024b). As Dan Adams of IGN observed of the broader role-playing layer, the system added genuine consequence: characters in San Andreas felt "human" partly because their physical form responded to play behaviour (Adams, 2005).
The gym mechanic served three interlocking design purposes. First, it integrated the open world's pacing — a player who had grown CJ into a hulking, over-fed liability could no longer outrun the Ballas — encouraging a deliberate maintenance loop. Second, it deepened character identification: Sam Houser's team explicitly stated that body-weight customisation made players feel that "their actions could have consequences in the game" (Wikipedia, 2024b). Third, it monetised the city's space, populating gyms with NPCs, trainers, and dialogue rather than leaving them as decorative facades. The system, however, drew criticism for its grinding requirements; some players found the constant nutritional bookkeeping tedious, particularly when "losing muscle lessens combat effectiveness" forced periodic top-up visits (Wikipedia, 2024a).
Notably, no subsequent mainline Grand Theft Auto title has restored the full San Andreas gym loop. GTA IV (2008) abandoned RPG progression entirely in favour of cinematic realism, and GTA V (2013), despite featuring three protagonists, offered only "Special Abilities" tied to character archetype rather than a trainable physique. This 22-year absence has elevated the gym mechanic to a near-mythic status among the GTA community, with retrospectives consistently citing it as a feature whose loss diminished the series' simulation ambition (Adeniji, 2024).
Several factors make a sophisticated return of the bodybuilding mechanic plausible in GTA VI:
The expected implementation will likely fuse San Andreas's discrete stat axes with RDR2's continuous, naturalistic feedback: weight that drifts with diet, muscle that requires both protein intake and resistance training, cardiovascular conditioning tied to sprint and swim duration, and visible silhouette changes rendered through the modern character pipeline. Boxing/MMA gyms may return as optional minigame hubs, possibly with PvP elements in the eventual GTA Online successor.
Rockstar may dilute the mechanic to avoid the "grinding" criticism that dogged the original; a likely compromise is a slower decay curve and richer narrative integration (gym-based side missions, trainer characters) rather than the bare statistical loop. There is also a precedent — GTA V's special abilities — for Rockstar pivoting to abstracted skill systems rather than physiological simulation.
The bodybuilding/gym mechanic represents one of San Andreas's most distinctive and beloved systems, and its absence from the last two mainline games has only sharpened community appetite for its return. With RDR2 having proven Rockstar's capacity for elegant body-state simulation, GTA VI is the natural vehicle for a modernised reprise. Expected return probability is high (estimated 70–80%), with the likeliest form being a hybrid of San Andreas's explicit gym structure and RDR2's passive physiological modelling, integrated with the dual-protagonist framework to give Jason and Lucia tangible, player-shaped physiques.
Adams, D. (2005) Grand Theft Auto: San Andreas Review. IGN. Available at: https://www.ign.com/articles/2004/10/26/grand-theft-auto-san-andreas (Accessed: 14 May 2026).
Adeniji, A. (2024) '20 Years Ago, Grand Theft Auto: San Andreas Perfectly Re-Created Nineties Los Angeles', Rolling Stone, 26 October. Available at: https://www.rollingstone.com/culture/rs-gaming/grand-theft-auto-san-andreas-20-year-retrospective-1235143587/ (Accessed: 14 May 2026).
Wikipedia (2024a) Grand Theft Auto: San Andreas. Available at: https://en.wikipedia.org/wiki/Grand_Theft_Auto:_San_Andreas (Accessed: 14 May 2026).
Wikipedia (2024b) Carl Johnson (Grand Theft Auto). Available at: https://en.wikipedia.org/wiki/Carl_Johnson_(Grand_Theft_Auto) (Accessed: 14 May 2026).
Dunham, J. (2004) Good Eats: The Diets of San Andreas. IGN. Available at: https://www.ign.com/articles/2004/07/27/good-eats-the-diets-of-san-andreas (Accessed: 14 May 2026).