FitMorii
FitMorii it's a fitness apparel brand that moderates a Discord server. It gathers over 16000 members worldwide who discuss fitness-related topics. You can participate in channels to discuss general fitness-related topics such as #training-advice, #nutrition-advice, #food-science, #mental-health, and #memes. Moreover, there are channels to talk about specific types of training, such as calisthenics, powerlifting, bodybuilding, and cardio/aerobic.
How to join
This community is open to join. Head to their site to become a member.
Features
Related communities

Caliverse
20,000,000 membersCalisthenics for the whole universe - this is our mission and this is Caliverse. Giving a chance for everyone to learn what is calisthenics and how to perform it correctly - our friends United Calisthenics Group will show exactly how everything is done! Ever thought how others are training? Now you can connect to them and see workouts they have built and are using.

r/bodyweightfitness
3,000,000 membersA massive hub for calisthenics and bodyweight fitness, featuring structured routines and expert advice.

Calisthenics and Body Weight Training
483,006 membersA group dedicated to everything relating to Calisthenic and body weight training. A space where you can share your workouts, knowledge, tips, progress and results along your calisthenic journey. Feel free to ask questions, provide answers, motivation and support in reaching your callisthenic goals.