---
name: sleep-rhythm-system
description: Use when asked to set up consistent wake and bed times, a wind-down routine, morning light, and a plan for weekends and travel. Distinct from [[sleep-environment]] (the bedroom itself) and [[sleep-quality-assessment]] (assessing how well someone sleeps). Non-clinical habit design, not treatment of a sleep disorder.
---

# Sleep Rhythm System

A sleep rhythm is a repeatable pattern: a steady wake time, a protected
bedtime window, a wind-down, and morning light. This skill designs that
pattern for one person's real schedule, including the weekends and trips
that usually break it.

It is non-clinical habit design. It does not diagnose or treat sleep
problems.

## Input required

- **Fixed commitments**: work or school start, caregiving, commute.
- **Current pattern**: usual bed and wake times on weekdays and weekends.
- **Evening habits**: screens, caffeine timing, alcohol, late meals,
  exercise.
- **Morning access to daylight**: window, balcony, or a walk.
- **Travel and shift patterns** coming up.

## Questions to ask first

Ask in **one batch of at most five questions**, skipping any already
answered:

1. What time must you be up on most days, and how flexible is it?
2. When do you actually fall asleep and wake now, weekdays and weekends?
3. What do you usually do in the last hour before bed?
4. Can you get outdoors or near a bright window soon after waking?
5. Any travel, shift work, or a baby or pet that wakes you?

## Method

1. **Anchor the wake time.** Pick one wake time for all seven days, with
   a flexibility rule (for example, within an hour on weekends). The wake
   time is the anchor because it can be controlled, whereas falling
   asleep cannot.
2. **Set a bedtime window, not a minute.** Work back from the wake time
   by the sleep length the user finds sufficient, and add time to fall
   asleep. Treat the number as a personal starting default to adjust.
3. **Shift gradually.** Move the current times earlier in steps of about
   fifteen minutes every few days, a suggested default rather than a rule.
4. **Design the wind-down.** Pick three to five steps in a fixed order
   (lights lowered, screens away or dimmed, tidy, wash, read something
   calm). Choose steps the user will really do, and give it a start time.
5. **Add morning light.** Daylight or a bright window soon after waking,
   outdoors if possible, for a few minutes. Link it to an existing cue
   such as the first coffee.
6. **Place the limits.** Note when caffeine stops for the day and how late
   alcohol and heavy meals fall, as personal trials the user can adjust.
7. **Plan the weekend.** Keep the wake time within the agreed range;
   catch up with a short early-afternoon rest rather than a long lie-in.
8. **Plan travel.** Before a trip, move times toward the destination by
   steps if time allows. On arrival, take daylight at local morning and
   keep to local time. Write a short rule for return day too.
9. **Trial for two weeks,** log wake time and how rested one feels, and
   adjust one thing at a time.

## Output format

- **Rhythm card:** wake time, bedtime window, wind-down start.
- **Wind-down checklist** in order.
- **Light and caffeine rules.**
- **Weekend rule and travel rule.**
- **Two-week log** table: date, bed, wake, rested 1 to 5.

## Ground rules

- **Non-clinical.** This is habit design. Do not diagnose or promise
  outcomes.
- **See a clinician** for persistent insomnia, loud snoring, gasping or
  choking at night, or sleepiness during the day that interferes with
  life or driving. Use [[sleep-quality-assessment]] to describe the
  pattern first, and bring that to the appointment.
- **Do not drive drowsy.** Say so plainly if the user reports it.
- **Do not name medicines or supplements** or advise changing any.
- **No exact sleep-need claims.** Individuals differ; use the user's own
  experience.
- **Shift workers and new parents** need an adapted plan, not the
  standard one.

## Self-check before answering

- Is the wake time the fixed anchor, with a weekend rule?
- Is the wind-down short enough to survive a tired night?
- Did I add morning light and a travel plan?
- Did I include when to see a clinician?
- Did I avoid presenting defaults as scientific facts?

## Common pitfalls

- **Fixing bedtime instead of wake time**, then lying awake.
- **A twelve-step wind-down** abandoned in a week.
- **Big weekend lie-ins** that cancel weekday gains.
- **Lying in bed trying to sleep** for long stretches; the usual advice
  is to get up and do something calm until sleepy.
- **Changing everything at once**, so nothing can be learned.
- **Blaming willpower** for what may need a clinician.

## Example prompt

> I wake at six for work but fall asleep after midnight, and my weekends
> drift. Design a sleep rhythm for me: wake time, bedtime window, a short
> wind-down, morning light, and a rule for travel.

## Learn more

- [[sleep-environment]] for making the bedroom support the rhythm.
- [[sleep-quality-assessment]] for assessing sleep before or alongside.
- [[tomorrow-setup]] for the evening preparation that shortens mornings.
- [[ideal-week-system]] for fitting the rhythm into the whole week.