What can improve Calm rating for APOE4 carriers?
Phoenix has not yet published positive evidence that any intervention improves Calm rating for APOE4 carriers. Got sunlight and Sauna plus breathwork did not show a clear change.
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Calm rating: every measured intervention
Ranked only against the same measurement, in the same unit. See the positive, neutral, opposite-direction and still-collecting evidence before deciding what is worth your own test.
Phoenix APOE4 Research · Reviewed by Kevin Tran, APOE4/4 carrier and founder · Data through 2026-08-23 · How to read this research
How to read this
Observational research: real APOE4 carriers tracked over time, each compared with their own earlier self. Members chose their interventions, with no randomisation or placebo group. Everything else they changed is shown beside each result.
Read the full methods and limitsQuestions about Calm rating
What has Phoenix measured against Calm rating?
Phoenix has measured 2 interventions against Calm rating: 2 neutral. See the table below.
Every intervention measured against Calm rating
| Intervention | What we observed | Evidence status |
|---|---|---|
| Got sunlight | Got-sunlight tags showed no measurable calm benefit across 64 women and stayed flat to slightly negative at every support floor. | Neutral result |
| Sauna plus breathwork | Habit combinations, including sauna plus breathwork, did not outperform their best single ingredient across the published Phoenix evidence. | Neutral result |
What changed for real APOE4 carriers?
Search by health goal or intervention to see what changed for real members, including results that moved the wrong way.
Calm and stress · Feel calmer · 4 interventions shown.
Health goalCalm and stress
SubgoalFeel calmer
Feel calmer
Interventions tested: 4Breathwork
HabitsOutcomes: 1Calm rating: Increase 1.5 points
Cases: 1
Context affected
Details
Member #093531 averaged 7.9 calm points on 34 breathwork days versus 6.4 across 26 comparison days, with sauna often co-occurring.
Breathwork
?Collecting evidenceMember #093531 averaged 7.9 calm points on 34 breathwork days versus 6.4 across 26 comparison days, with sauna often co-occurring.
Selected member cases
- Phoenix memberAPOE4/462male
Calm averaged 7.9 on 34 breathwork days versus 6.4 across 26 comparison days, with sauna often co-occurring.
What else changed and what to test next
What else changed: nearby starts included sauna.
Next study: repeat Calm rating after a dated Breathwork window.
- logged members
- 1
- members with repeats
- 1
- observations
- 60
- measurements
- 60
Collecting evidence
No answer yet on Calm rating
Breathwork is being tracked against Calm rating, but Phoenix has not yet published a ranked result for this exact question.
Every carrier who logs a dated start and a repeat test moves this page closer to an answer, including you.
Follow Breathwork research.
Get an email when Phoenix publishes a meaningful update. At most one combined update each week.
Got sunlight
HabitsOutcomes: 1Calm rating: No improvement No improvement
Members: 64
Details
Got-sunlight tags showed no measurable calm benefit across 64 women and stayed flat to slightly negative at every support floor.
Got sunlight
—Neutral resultGot-sunlight tags showed no measurable calm benefit across 64 women and stayed flat to slightly negative at every support floor.
Little published human data on this link yet.
- logged members
- 64
- members with repeats
- 64
Sauna plus breathwork
HabitsOutcomes: 1Calm rating: No improvement No added benefit
Details
Habit combinations, including sauna plus breathwork, did not outperform their best single ingredient across the published Phoenix evidence.
Sauna plus breathwork
—Neutral resultHabit combinations, including sauna plus breathwork, did not outperform their best single ingredient across the published Phoenix evidence.
Little published human data on this link yet.
Sauna
HabitsOutcomes: 1Calm rating: Increase 1.64 points
Cases: 1
Context affected
Details
Member #093531's sauna days averaged 1.64 calm points higher, but sauna and breathwork often occurred together.
Sauna
?Collecting evidenceMember #093531's sauna days averaged 1.64 calm points higher, but sauna and breathwork often occurred together.
Little published human data on this link yet.
Selected member cases
- Phoenix memberAPOE4/462male+1.6points
Calm averaged 1.64 points higher on sauna days while breathwork often occurred alongside sauna.
What else changed and what to test next
What else changed: nearby starts included breathwork.
Next study: repeat Calm rating after a dated Sauna window.
- logged members
- 1
- members with repeats
- 1
- observations
- 1
Collecting evidence
No answer yet on Calm rating
Sauna is being tracked against Calm rating, but Phoenix has not yet published a ranked result for this exact question.
Every carrier who logs a dated start and a repeat test moves this page closer to an answer, including you.
Follow Sauna research.
Get an email when Phoenix publishes a meaningful update. At most one combined update each week.
The Beat the Odds Study
The 43-page study: what members tried, how their bloodwork and wearable results changed, and what else changed alongside them.
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