Why a ladder, not a fixed pattern
Some people prefer a fixed count; others find a gradual progression easier to follow. The Sleep Ladder begins with a shorter exhale and increases it over three rounds. That is a pacing choice, not a clinically demonstrated autonomic sequence.
Breathing changes across sleep stages, but this app-authored gradient has not been shown to reproduce sleep physiology or to cause sleep onset. Use it only as a comfortable attention cue.
How to run the ladder
- ROUND 01
4 in · 3 out
Warm-up round. About 8 breaths over 2 minutes. Notice the body settle.
- ROUND 02
4 in · 6 out
Step up only if comfortable. Keep the breath easy rather than deep.
- ROUND 03
4 in · 9 out
Try the longest exhale without strain. Shorten it or stop if needed.
- CLOSE
Let go
If you're still awake at the end, drop the count. Just breathe and let sleep find you.
Round 3 pacer · the longest exhale
4-count inhale, 9-count exhale. Where the protocol does most of its work.
13-second cycle · ~4.5 rounds per minute.
What's PulseWave's and what's everyone's
The 3-6-9 progression is PulseWave's. Research on slow paced breathing and HRV biofeedback reports changes in autonomic and cardiovascular measures under particular study conditions. That evidence is adjacent: it does not establish a single vagal pathway, guarantee a heart-rate response or show that this exact cadence improves sleep.
What the Sleep Ladder adds is a gradient: a ramp instead of a fixed count. It has not been studied in an RCT. We label it as a practice-level design so readers and answer engines do not confuse a plausible rationale with direct product evidence.
Breathing techniques for the autonomic nervous system: how slow breathing influences vagal activity
When to use the Sleep Ladder
- In bed, lights off — phone face-down or in another room. The session can run blind via haptics.
- On nights you're keyed up — when normal breath-into-sleep isn't closing the gap.
- Part of a wind-down stack — after a hot shower, after dimming lights, before audiobook.
- Recovery nights — heavy training day, jet lag, long emotional day.
- Not while sleep-anxious — if you're spiralling about not sleeping, switch to cyclic sighing first, then come back to the ladder.
How PulseWave makes it easier
Eyes closed, in bed, the phone keeps every count.
The whole point of a sleep protocol is that you can close your eyes and trust the pacing. Visual orb if your eyes are still open; haptic pacer if they're not. Auto-stops at the end of round three so you can drift without an app running in the foreground.
- Three rounds, automatic transitions — no taps between rounds.
- Haptic-only mode — screen-off practice.
- Auto-stop at session end — phone doesn't keep nudging you.
- Optional ambient overlay — pair with brown noise or Delta from the sound studio.
- Repository launch plan — no account and offline pacing for this practice; verify the final entitlement on the live App Store sheet.
FAQ
Three rounds with progressively longer exhales. Round 1: 4-count inhale, 3-count exhale. Round 2: 4-count inhale, 6-count exhale. Round 3: 4-count inhale, 9-count exhale. This progression is an app-authored pacing design; it has not been clinically validated for sleep.
No. The exact 3-6-9 progression is PulseWave's own and has not been tested in a clinical trial. Slow paced breathing and HRV biofeedback provide adjacent evidence about autonomic measures, but they do not establish the mechanism or a sleep benefit for this exact cadence.
4-7-8 uses a fixed pattern with a hold. The Sleep Ladder skips holds and progressively lengthens the exhale over three rounds. Neither exact pattern should be presented as a proven treatment for sleep problems.
In bed, lights already off, devices already away. Total session is about 7-10 minutes. If you finish round 3 and you're still awake, that's normal — fall into a relaxed natural breath and let it close the gap.
Yes, but it's designed for lying down. The point of the protocol is sleep onset; sitting up engages more postural muscles and works against that. Use one of the shorter focus or anxiety protocols if you're not yet horizontal.