Participant check-in

One short check-in a day.

This page is designed for repeated follow-up, not for interpretation after a single day. Once you sign in, entries are stored in the secure study backend and later linked back to your wearable history.

Open today’s check-in See your progress

Study access

Secure participant access

Use the same email each time. The participant code can be prefilled from your study link and will then be linked to your secure study account.

Email for magic link access

Current access

Not signed in yet.

Remote sync Waiting for sign-in.

Data return When enough days accumulate, the study can produce a participant review and a professional companion.

Boundary This page records follow-up data. It does not diagnose insomnia, anxiety, depression, pain conditions, or any other disorder.

Participant profile

Study identity

If your study link already includes a participant code, it will appear here automatically. Save it after signing in so the code is linked to your secure study account.

Participant code

Optional local label

Current participant

No participant code linked to this account yet.

Progress

Your follow-up window

These markers do not interpret symptoms. They only show how far the study window has progressed.

Total check-ins0

Most recent day—

Current streak0 days

Current phaseStarting

7-day baseline0 / 7 days completed

14-day pattern review0 / 14 days completed

28-day review-ready window0 / 28 days completed

Daily entry

Record or edit a day

Linkage rule: if the night started late on the 15th and ended on the 16th, the check-in date should still be 2026-04-15.

Participant code for this entry

Check-in date

Subjective sleep quality

Stress burden

Anxiety burden

Low mood / depression

Overall mood valence

Fatigue

Energy

Pain

Muscle tension

Positive affect

Negative affect

Approximate caffeine total (mg)

Approximate alcohol units

Nap minutes

Intentional exercise minutes

Menstrual cycle phase

Optional note

Binary context

Major stressor that day Dream recall Late caffeine Evening alcohol Late exercise Acute illness Medication change Travel Major schedule disruption

Recent history

Your study follow-up log

You can review and edit previous entries here. Participant-facing export and backup tools are intentionally hidden.

Date	Sleep	Stress	Anxiety	Fatigue	Context	Note	Actions
No local entries yet.

Study privacy This participant view writes to the secure study backend after sign-in. Data is private by default and linked to your participant code and account.

Change log

Mark interventions, changes, or disruptions

Use this section when something starts, stops, or changes in a way that could affect sleep or next-day burden. These anchors drive later pre/post response reads.

Participant code for this event

Event date

Optional end date

Event type

Short event label

Domain

Primary response target

Expected direction

Intensity / salience

Pre window days

Post window days

Optional event note

Response anchors

Your logged change windows

These rows do not interpret the response by themselves. They create the anchors the study will later use to compare before and after.

Date	Label	Type	Target	Direction	Note	Actions
No synced change events yet.

Why this matters These event anchors are what let Butterfly Effect move from static pattern description to governed pre/post response analysis.