r/loseit vs r/Fitness

Side-by-side using public descriptions, members, growth and rule titles from SubMouse. Missing fields show as n/a. Adult communities are excluded.

Swap sides New comparison Related to r/loseit Related to r/Fitness

Weight-loss community vs general fitness training

r/loseit is for people of all sizes discussing healthy, sustainable weight loss. r/Fitness is for pursuing physical fitness goals and routes common questions to its wiki.

Directory scale favours Fitness (about 12.6M, rank #69) over loseit (about 4.2M, rank #223). Activity samples go the other way on tempo: loseit’s collected sample is much busier day-to-day (roughly 72 text posts per day) than Fitness (roughly 26), which fits a check-in and support culture beside a wiki-gated training room.

Collected short rule titles mark different boundaries. loseit emphasises civility, staying on topic, and bans harassment, diet cash pools, self-promotion and surveys. Fitness’s collected titles are wiki/rules-first. Bring weight-change support and sustainable loss methods to loseit; bring training programming and general fitness goals to Fitness after reading its wiki—without treating either as medical advice.

r/loseit: weight-loss methods and support; collected titles ban harassment, cash pools and self-promo.
r/Fitness: fitness goals and training; read the wiki/rules before posting (collected titles).
Different intents, overlapping interest. Both have full SubMouse community pages.

Written comparison based on public descriptions and rule titles · updated 2026-11-06.

r/loseit

loseit - Lose the Fat

A place for people of all sizes to discuss healthy and sustainable methods of weight loss. Whether you need to lose 2 lbs or 400 lbs, you are welcome here!

Members: 4.2M
7-day growth: +1.4K
Posts/day: 72.1
Directory rank: #223
Created: Jul 29, 2010
Submissions: Text posts

Sample mix: text posts 100%

Topics: Weight Loss

Rule titles (short names we collected)

Use the Report Option
Be Good to One Another
Do Not Feed the Trolls
No Harassment / Don't Be a Creep
No Politics / Stay On Topic
No Promotion of Diet Cash Pools/Requests for Money
No Self Promotion
No Surveys
SV/NSV, Progress, Milestone Posts Need Details
No Promoting or Encouraging Unhealthy Weight Loss Methods
No Accountability Partner Posts
No Standalone Weight Loss Medication Posts

Open r/loseit on SubMouse

r/Fitness

Fitness

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.

Members: 12.6M
7-day growth: +3.2K
Posts/day: 26.3
Directory rank: #69
Created: May 7, 2008
Submissions: Text posts

Sample mix: text posts 100%

Topics: Fitness

Rule titles (short names we collected)

Read the Rules Before Posting
Read the Wiki Before Posting

Open r/Fitness on SubMouse

Supported differences

Aspect	r/loseit	r/Fitness
Public focus (from each community’s public description)	A place for people of all sizes to discuss healthy and sustainable methods of weight loss. Whether you need to lose 2 lbs or 400 lbs, you are welcome here!	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.
Size r/Fitness is larger in our directory (about 3×).	4.2M members	12.6M members
Posting activity (our sample)	72.1/day	26.3/day
Common post types in our sample	text posts 100%	text posts 100%
Topic tags on SubMouse	Weight Loss	Fitness
Selected rule titles (short names we collected)	Use the Report Option; Be Good to One Another; Do Not Feed the Trolls; No Harassment / Don't Be a Creep; No Politics / Stay On Topic	Read the Rules Before Posting; Read the Wiki Before Posting

Rules and tone we can verify

loseit collected titles include: Be Good to One Another; No Harassment; No Politics / Stay On Topic; No Promotion of Diet Cash Pools; No Self Promotion; No Surveys. Fitness: Read the Rules Before Posting; Read the Wiki Before Posting. Both samples are text posts.

Where this comparison comes from

Public descriptions and member counts from SubMouse’s safe-for-work directory. Short rule titles and activity samples collected for both. Short titles only.

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 post-type mixes appear when we have an activity sample. Rule lines are short titles, not the full sidebar. Directory rank is listing order — communities outside the current Top 100 open in the info tool instead of a full community page.