A short, curated guide — not an automatic related dump. Figures come from SubMouse's safe-for-work directory when we have them.
r/bodybuilding (about 3.0M members, directory rank #372) is the directory hub for bodybuilding. Broader strength sports, general gym lifting and wiki-driven Fitness each have clearer homes when the goal is not physique bodybuilding.
Stay on bodybuilding for physique-focused bodybuilding. Use strength_training for multi-discipline strength sports, GYM for general barbell/dumbbell/calisthenics gym talk, and Fitness for broad physical fitness goals.
r/bodybuilding — Bodybuilding - everybody wants to be a bodybuilder
Strength Training
When to choose it: Bodybuilding plus powerlifting, weightlifting, strongman and more.
Why it is here: Listed bodybuilding among its topics; about 5.0M members, rank #178.
How it differs from r/bodybuilding: Multi-discipline strength versus bodybuilding specialty.
GYM
When to choose it: General gym lifting and calisthenics discussion.
Why it is here: Public description: general fitness with emphasis on barbell/dumbbell lifting and calisthenics (about 1.2M members, rank #850).
How it differs from r/bodybuilding: General gym culture versus bodybuilding sport/physique focus.
Fitness
When to choose it: General physical fitness goals and programming.
Why it is here: About 12.6M members, rank #69.
How it differs from r/bodybuilding: General Fitness versus bodybuilding specialty.
Run the automatic finder for r/bodybuilding (results are matched from our directory; that page is not indexed): Find related to r/bodybuilding.
Members and public descriptions come from SubMouse's safe-for-work directory (as of 2026-11-02 UTC); 7-day growth measured from 2026-10-26. Posts/day and culture claims appear only when we have them — missing fields stay n/a. Directory rank is listing order. Communities outside the published Top 100 open in the info tool instead of a full community page. Guide updated 2026-11-07.