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r/Physiology↗

Questions and discussions related to physiology. Human physiology, zoophysiology, and function of any biological system are all welcome. Recently published? Post your paper and answer questions!

20k subscribers39 posts / mo in Sep 202632 authors / mosince 2009

r/Physiology has 20k members (+16% over the last 12 months). It gets about 39 posts a month from 32 people. Top topics: Anatomy & Physiology Studying, MuscleHypertrophyTraining and Biochemistry Studies.

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Size and growth

How r/Physiology has grown

r/Physiology

Subscriber growth

Subscribers over time

+16%in 12 months · +5.8% in 3 months · +3.4% in 1 month
Oct 202620k
Growing20k subscribers
Data since Mar 2018Live · through Oct 2026
r/Physiology

Monthly activity

Posts, comments and authors per month

+5.4%vs Sep 2025 · +30% last 3 months vs the 3 before
Sep 202639
BusierPeaked at 97 in Apr 2024
Data through Sep 2026 · October usually lands mid-November

What people talk about

Topics and brands on r/Physiology

Top topics

Share of the subreddit's posts

  1. Anatomy & Physiology Studying2.3%
  2. MuscleHypertrophyTraining0.8%
  3. Biochemistry Studies0.6%
  4. Gut Microbiome Health0.4%
  5. Flexibility Routine0.4%

The full report

Everything else about r/Physiology

Posting rules and account requirements, how often posts get removed, who writes here (age, gender, countries), what people ask for, how they talk, and related subreddits — all in the full report.

Posts and activity for Sep 2026. Members from Reddit's subscriber counts. Read from the same data the app runs on. Our research