Browse by exact outcome

Deep sleep: 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.

Research issue
Issue 01
Data through
2026-08-09
Evidence map version
v1.1.0
Explore the evidence Get the Evidence Map

How to read this

Phoenix research is longitudinal and observational: we follow real APOE4 carriers over time and compare each member with their own earlier self, with no placebo group, no randomisation, and members choosing their own interventions.

That means these are strong signals pointing at what to test next, not proof of cause. Most nutrition, supplement and lifestyle research you read online has exactly the same design. The difference is that we say so, and we show you the confounders.

Read the full methods and limits

What the Phoenix community is measuring

Browse exact outcomes and interventions. Each result keeps its source, measurement rule and audit record beside the claim.

Get the PDFJoin Phoenix in 7 minutes Open inside Phoenix

Sleep

Keep total duration, sleep stages and subjective sleep ratings separate.

What may work against

Deep sleep

Verified wearable deep-sleep stage · Aim: higher

Training and workouts

↘Opposite direction

The Trade-Off Athlete's same-night deep sleep was 30% to 35% lower across two computations.

Selected member cases

  1. Trade-Off Athlete · APOE4/4 · male · age 50-59

    Same-night deep sleep was 30% to 35% lower across two independent computations.

    What else changed: no nearby starts were recorded.

    Next study: repeat Deep sleep after a dated Training and workouts window.

1 selected member case · not a response rate

Logged members
1
Members with repeats
1
Observations
1
Sources and context

The curated Trade-Off Athlete comparison of workout and non-workout wearable nights.

  • report-lines-460-507, reviewed by independent verifier

1 selected case shown with this evidence.

Audit history

These historical records remain beside the current evidence so you can see why their status changed.

Deep sleep

Alcohol

!Record withdrawn

An apparent alcohol-improves-deep-sleep result dissolved under device-coverage checks and is retained only as a retraction.

0 selected member cases · not a response rate

Sources and context

Historical alcohol-tagged wearable nights before corrected device-coverage checks.

  • report-lines-559-604, reviewed by independent verifier

This result was withdrawn: The positive deep-sleep result was a wearable-coverage artifact and remains excluded from active evidence.

Keep the map

Take every result into your next experiment.

Get the Issue 01 Evidence Map by email. It groups the same evidence by outcome and by intervention, including what worked, what did not, and what Phoenix wants to test next.

Instant PDF · Issue 02 lands in your inbox the day it publishes · No spam

Turn evidence into your next test

Magnesium and homocysteine is 7 members from an answer.

Forty carriers with a dated start and a repeat blood test close it. Creatine, vitamin D3 and B12 sit further back. Your next blood test is somebody else's answer, and theirs is yours.

Take the 7-minute assessment