37 Fitness communities on Reddit
Updated 6/17/2026
r/Fitness
on reddit
A place for the pursuit of physical fitness goals. Please see the r/Fitness Wiki and FAQ at https://thefitness.wiki for help with common questions.12.5M members
Forum14 views / month
r/transfitness
on reddit
This sub is for the promotion of healthy fitness goals, advice, and encouragement for the transgender community. All are welcome here that wish to participate in a positive manner.15K members
Forum8 views / month
r/intermittentfasting
on reddit
Intermittent Fasting (IF) is way of eating that restricts *when* you eat, usually on a daily or weekly schedule. People engage in IF to reap the many benefits to health, fitness, and mental clarity. This is a place to share success, support each other, ask questions, and learn. IF is an 18+ community because the practice is not medically recommended to/for children.1.0M members
Forum8 views / month
r/FemaleBodybuilding
on reddit
A place for women interested in hypertrophy. Whether you're an amateur just looking to get bigger or a competitor looking to dial in your conditioning, come on in! This is NOT a fetish community. Sexual content is not allowed - if your post contains nudity, or if you’re posting from an OnlyFans account, your post will be removed. Repeat offenders will be banned.26K members
Forum18 views / month
r/coldplunge
on reddit
community for people willing to take the cold plunge to improve their lives and physical and mental well being29K members
Forum8 views / month
r/xxfitness
on reddit
We're a community targeted at female and gender non binary/gender non conforming redditors to discuss fitness. However, all genders are welcome to contribute, all we ask is that you abide by the rules.3.1M members
Forum13 views / month
r/effectivefitness
on reddit
The best Fitness Community, subreddit linked to discord.gg/fitness | Effective Fitness the best fitness discord server107K members
ForumChat2 views / month
r/weightroom
on reddit
A subreddit for general weight training discussion, focused on intermediate level and above in experience and strength, for those ranging from strength sport competitors, sports that benefit from weight training, or weight training enthusiasts. Or for people to tell /u/WeaponizedSleep to eat more.395K members
Forum7 views / month
r/WearableFitness
on reddit
/r/WearableFitness is a place for users of wearable tech to discuss the latest wearable fitness products and to share their own achievements. Users of all wearable platforms are welcome!275 members
Forum3 views / month
r/GymMemes
on reddit
It never gets easier, you just get stronger.2.1M members
Forum12 views / month
r/fitpregnancy
on reddit
An inclusive space to discuss fitness and pregnancy - pre-natal, during, and post-partum. Geared towards motivating and inspiring pregnant people to stay healthy and fit throughout.74K members
Forum6 views / month
r/AdvancedRunning
on reddit
Discussion about advanced training, racing, tactics, elite running, support, advice, and more. "Advanced" Running is NOT based on your level or race times. It's for individuals with the mindset of improving their running performance, whether they are competitive athletes, experienced runners, or enthusiasts looking to take their running to the next level. This is an actively moderated community, please review the rules/FAQ/wiki, and use the stickied Q&As for short questions/requests.478K members
Forum4 views / month
r/whoop
on reddit
Welcome to r/whoop – The Unofficial Community for WHOOP Users and Enthusiasts! For discussing everything related to the WHOOP wearable fitness tracker. Whether you're a seasoned WHOOP user or just considering joining the platform, this community is here to help you understand, optimize, and share your experience with WHOOP’s health and performance data.147K members
Forum9 views / month
r/kettlebell
on reddit
Forum for kettlebell enthusiasts.330K members
Forum6 views / month
r/homegym
on reddit
A subreddit devoted to working out at home.1.2M members
Forum5 views / month
r/HybridCalisthenics
on reddit
Cultivate long-term health and fitness!11K members
Forum6 views / month
r/Sauna
on reddit
Welcome to r/Sauna! This is a subreddit for all things Sauna - Pictures of You and your Sauna - Sharing your building progress and questions - Whatever else you can think of Sauna related - Saunas are used around the world and we want to hear from you! You can also find us on our own Lemmy instance over at https://r-sauna.fi - posts made there will be automatically re-posted here, so please don't double post.125K members
Forum5 views / month
r/coldshowers
on reddit
Reddit community dedicated to cold exposure therapy including cold showers, ice baths, and cryotherapy for health, longevity, and mental resilience.43K members
Forum3 views / month
r/carnivore
on reddit
Welcome to r/carnivore. This community is different than typical diet communities, it's not a grab bag of hacks for undereating It's all about restoring health and that means the first order of business is improving health markers and starting to increase muscle and bone density -- yes, that means you can and should eat heartily to appetite. If you're ready to get started eating fatty meat without carbs, check out -- https://www.reddit.com/r/carnivore/wiki/faq/#wiki_getting_started95K members
Forum3 views / month
r/running
on reddit
All runners welcome.4.2M members
Forum5 views / month
r/C25K
on reddit
Anything related to the Couch-to-5K running programs or the like; open to all, noobie to pro.228K members
Forum
r/RunningShoeGeeks
on reddit
A place for runners to share running shoe related news, releases, reviews, and deals. Please use our sister sub r/AskRunningShoeGeeks for all personal questions or recommendation requests. This sub is NOT affiliated with any other RunningShoeGeeks on other social media platforms.309K members
Forum13 views / month
r/Marathon_Training
on reddit
This subreddit is for discussions about road and trail marathons. All levels of experience are welcome. Our rules are simple: be kind and no spam, content should be centered around training for marathons. To reduce spam and trolls, all contributors must have a minimum karma of 10 to participate.160K members
Forum4 views / month
r/HalfMarathon
on reddit
Anything related to Half Marathons from training to tips, questions, and boasting!14K members
Forum4 views / month
r/spartanrace
on reddit
r/Spartanrace is a place for OCR enthusiasts who enjoy or plan to run Spartan Races. Racers of all experience levels welcome!29K members
Forum3 views / month
r/BarefootRunning
on reddit
A community of barefoot and minimalist runners.81K members
Forum6 views / month
r/BecomingTheIceman
on reddit
The Wim Hof method is a means of learning to control the autonomic nervous system and improve vitality. The Wim Hof method employs the practice of breathing exercises and graduated exposure to cold temperatures. Wim Hof Method: https://www.wimhofmethod.com/ https://www.facebook.com/groups/wimhofmethod/?ref=gysj76K members
Chat4 views / month
r/bodybuilding
on reddit
The premier Reddit community for bodybuilding. Discussions on training, nutrition, supplementation, and contest prep. Includes news, articles, personal progress, and advice for all levels.2.9M members
Forum9 views / month
r/naturalbodybuilding
on reddit
A place for for those who believe that proper diet and intense training are all you need to build an amazing physique. Discuss NANBF/IPE, INBF/WNBF, OCB, ABA, INBA/PNBA, and IFPA bodybuilding, noncompetitive bodybuilding, diets for the natural lifters, exercise routines and more! All are welcome here but this sub is intended for intermediate to advanced lifters, we ask that beginners utilize the weekly and daily discussion threads for your needs. User flair is required to post.452K members
Forum5 views / month
r/hypertrophy
on reddit
Everything about building muscle6K members
Forum7 views / month
r/brogress
on reddit
"Bro" is a state of mind and attitude. r/Brogress is representative of that: The place to show off the ongoing pursuit of a better you, step by step!256K members
Forum9 views / month
r/sleep
on reddit
Good sleep is essential for our health and happiness. Find and strengthen your best habits and help others improve theirs.697K members
Forum7 views / month
r/moreplatesmoredates
on reddit
The official subreddit community for the Youtube channel More Plates More Dates.219K members
Forum9 views / month
r/bjj
on reddit
Brazilian Jiu-Jitsu (BJJ) is a martial art that focuses on grappling and ground fighting. /r/bjj is for discussing BJJ training, techniques, news, competition, asking questions and getting advice. Beginners are welcome. Discussion is encouraged.923K members
Forum4 views / month
r/MuayThai
on reddit
All things Muay Thai, news, upcoming events & general discussion. From fighters to fans, everyone is welcome!321K members
Forum5 views / month
FAQ
Aggregate Stats
Community size
- Tiny: 0 communities (<20 members)
- Small: 0 communities (20-100 members)
- Medium: 1 communities (100-1,000 members)
- Large: 1 communities (1,000-10,000 members)
- Huge: 11 communities (10,000-100,000 members)
- Massive: 17 communities (100,000-1M members)
- Gigantic: 7 communities (1M+ members)