Reddit attempts to link accounts that are obviously from the same user/company. This is based on usage patterns, (hardware) footprint, and IPs.

Avoid logging into all accounts from all devices, which would obviously link them.

Numbers in Brackets indicate weekly visitors. Lists are sorted by weekly visitors (Week of Jan 08 2026).

• r/biohackers “DIY Biology, Nutrigenomics, and Grinding” They seem highly focused on supplementals. (410K)
• r/LucidDreaming (90K)
• r/Longevity (19K)
• r/sleephackers As the name suggests. However, the subreddit is FULL with sleep-app ads. (18K)
• r/BCI (1.7K)
• r/polyphasic People practicing polyphasic sleep, relevant for smart alarm. (1K)

• r/Dreams (241K)
• r/sleepparalysis (7.1K)
• r/SleepApnea (122K)
• r/insomnia (97K)
• r/SleepDisorders (1K)
• r/SleepTight “Discuss sleep improvement habits and ask questions.” (Small Subreddit) (73)
• r/SleepMusic Sharing music to fall asleep. (20)

• r/Fitness Generic fitness community (690K)
• r/naturalbodybuilding Community is highly focused on fitness optimization, more reliant on optimized sleep than “unnatural” bodybuilding. (410K)
• r/crossfit They track a lot (whoop), they often work out until exhaustion affecting sleep. (206K)

Not sorted, all are large communities.

• r/whoop
• r/AppleWatch
• r/Garmin
• r/GarminWatches
• r/Oura (Small, <100 Visitors weekly)

• r/dataisbeautiful They love nice visualizations, really large audience. Also often includes posts about tracking yourself. “Posts regarding Personal Data are permissible only on Mondays ET. “ (1M)
• r/askreddit Easy way to gather a few comments by posting open questions.