Tutorial Breathing and Interval Training

Breathing and Interval Training

NOOP's Breathe and Intervals screens are two powerful haptic-first tools designed to enhance your training without staring at a screen. Both work visually on their own, but they unlock their full potential when you bond your WHOOP strap — the device buzzes you through every phase so you can train with your eyes closed (Breathe) or hands-free (Intervals).

This guide walks you through setting up and using both features.

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Prerequisites

Visual-only mode: Both tools work without a strap connected; you just see a timer and visual cues.

Haptic mode (recommended): You'll get the full experience — haptic pulses guiding your breath or cueing interval transitions — but you need:

• A bonded WHOOP strap (4.0 or 5.0/MG)
• An active Bluetooth connection to NOOP
• Your strap worn and within ~1 meter of your device

If you haven't paired your strap yet, see Strap Support and Pairing.

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Breathe: Haptic-Paced HRV Breathing

Breathe is NOOP's signature feature — a real-time HRV breathing coach. The strap both measures your heart-rate variability (R-R intervals) and buzzes, so NOOP can pace your breath with haptic cues and show you your HRV responding live as you relax into coherence.

What you'll do

1. Pick a breathing pace (Relax, Coherence, or Box).
2. Hit Start session.
3. Follow the orb on screen (and/or the buzzes on your wrist): inhale as it expands, exhale as it contracts.
4. Watch your live heart rate and a rolling HRV estimate (RMSSD) update in real time.
5. Watch a "coherence estimate" bar — an informal indicator of parasympathetic tone — build as the session deepens.

Step-by-step

1. Open Breathe

Click Breathe in the sidebar. You'll see:

• A status row showing whether the session is live and whether haptics are on (bonded) or visual-only.
• A large breathing orb that expands and contracts with each breath phase.
• Three preset pace buttons: Relax 4-6, Coherence 5.5, Box 4-4.
• Live readouts for heart rate, HRV (RMSSD), and the current pace.
• A coherence estimate bar at the bottom.

2. Pick your pace

Tap one of the three preset buttons to choose a breathing rhythm:

Pace	Pattern	Best for
Relax 4-6	4-second inhale / 6-second exhale	Downshifting into a parasympathetic state; longer exhale is a classical relaxation cue
Coherence 5.5	Equal 5.5-second breaths (~5.5 breaths/min)	Balancing the nervous system; this rate is often associated with HRV coherence
Box 4-4	Equal 4-second breaths (15 breaths/min)	Steady focus and alertness while maintaining control

You can switch paces mid-session — the orb will reset cleanly to the new rhythm.

3. Connect your strap (optional but recommended)

If you see "Visual only" in the status row, your strap isn't bonded:

• Open the Live screen and click Scan & Connect to pair.
• Once bonded, return to Breathe — the pill should now say "Haptics on".

4. Start your session

Tap Start session.

What you'll see and feel:

• The orb begins to expand and contract in sync with the pace you chose.
• If bonded, you'll feel:
  • One buzz on the inhale — as the orb starts to expand.
  • Two buzzes on the exhale — as the orb starts to contract.
• A timer at the top right shows elapsed time and breath count.

5. Breathe with the cues

Keep your eyes on the orb (or close them if you trust the haptics), and let your breath follow:

• Inhale as the orb expands (or when you feel the single buzz).
• Exhale as the orb contracts (or when you feel the two buzzes).

There's no "winning" — the goal is to maintain steady, paced breathing for as long as it feels natural.

6. Watch the live readouts

Three tiles beneath the orb update in real time:

Metric	What it means	Notes
Heart rate (bpm)	Your smoothed live heart rate	The strap reports live HR; it stays steady only if you're wearing it snugly with the sensor on skin
HRV (RMSSD, ms)	Rolling heart-rate variability over the last ~30 beats	Higher = more parasympathetic tone (relaxation). Expect it to rise as you settle into the paced breathing. The caption shows how many R-R intervals are in the rolling window.
Pace	The target breathing rate	Shows inhale/exhale duration in seconds

7. Read the coherence estimate

Below the readouts is a coherence estimate bar and a labeled state:

• Building (< 20 ms RMSSD) — you're just starting; HRV is still settling.
• Settling (20–45 ms) — relaxation is beginning; nervous system is quieting.
• Coherent (45–80 ms) — strong parasympathetic engagement; you're in a good flow.
• Deep calm (≥ 80 ms) — high HRV coherence; deep relaxation state.

Important: This is an estimate, not a clinical reading. It's based on RMSSD (a component of HRV), not the full HRV picture. Trends over a session matter far more than any single number. If your RMSSD stays low, it may just mean you're naturally low-variable that day — don't stress about it.

8. Test a buzz (with a bonded strap)

Click Test buzz to fire a single haptic pulse. This confirms the strap is responding before you start a real session.

9. Stop your session

Tap Stop session to end. The orb will fade back to its resting size, and your timer and breath count are preserved until you close the screen.

Tips

• Optimal session length: 5–10 minutes is typical. There's no time limit — stop when it feels right.
• Wear your strap snugly: The sensor needs skin contact for accurate HR and R-R data. Loose fits produce gaps and noisy data.
• Consistent timing is key: Paced breathing works best when you stick to the rhythm, even if your RMSSD doesn't spike immediately. Coherence often develops over the course of a session.
• Use Relax 4-6 when stressed: The long exhale naturally triggers the parasympathetic nervous system.
• If you're new to HRV: Don't chase the numbers. The goal is the feeling — calm, steady, controlled. The RMSSD is just feedback.
• Breathe with eyes closed if you trust the haptics: Once you've felt the rhythm a few times, you can close your eyes and rely entirely on the buzz cues. This deepens the relaxation effect.

Troubleshooting

Issue	Solution
RMSSD shows "Waiting for R-R"	Your strap isn't sending R-R intervals yet. Ensure it's bonded (open Live, check the connection status pill), worn snugly, and within ~1 m.
No buzz cues felt	Check that the strap is bonded (status should say "Haptics on"). If bonded but silent, tap Test buzz to confirm the motor works. If the test buzz fires but the breathing buzzes don't, try disconnecting and re-scanning on the Live screen.
Orb isn't moving	The session isn't running. Tap Start session.
Can't find the strap to bond	See Strap Support and Pairing. If it's a WHOOP 5.0/MG, remember to tap the band to put it in pairing mode and close the official WHOOP app first.

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Intervals: Silent Haptic HIIT Timer

Intervals is a configurable high-intensity interval training (HIIT) timer that lives on haptics. Set your work/rest/rounds, and the strap buzzes you through every transition — no screen-watching needed.

What you'll do

1. Set work duration, rest duration, and number of rounds.
2. Hit Start.
3. Feel the strap buzz you through each phase:
   • 3 buzzes when WORK starts (go hard).
   • 1 buzz when REST starts (recover).
   • 3-2-1 tick in the last 3 seconds of each phase (prepare for the next).
   • 5 buzzes when the session is done (celebration).
4. Glance at the screen only if you need to know the time left.

Step-by-step

1. Open Intervals

Click Intervals in the sidebar. You'll see:

• A status row showing whether buzz cues are on (bonded) or visual-only.
• A large countdown ring and number showing the time left in the current phase.
• Phase label (WORK / REST / DONE), current round, and total session progress.
• A configuration card with sliders for Work, Rest, and Rounds.

2. Connect your strap (optional but recommended)

If you see "Connect strap for buzz cues", your strap isn't bonded:

• Open the Live screen and bond.
• Return to Intervals — the status should now say "Buzz cues on".

With a bonded strap, you get haptic cues at every transition. Without one, you have a fully functional visual timer.

3. Configure your workout

Use the three sliders in the Configure card (or number fields, depending on your platform):

Setting	Range	Notes
Work	5–600 seconds	Duration of each high-intensity block. Common: 20–40 seconds.
Rest	5–600 seconds	Recovery between work blocks. Common: 10–20 seconds.
Rounds	1–30	Number of work/rest pairs. Total time = (Work × Rounds) + (Rest × (Rounds − 1)).

Example: 30 sec Work / 15 sec Rest / 8 Rounds = 4 minutes total (30×8 + 15×7 = 240 + 105 = 345 seconds ≈ 5m 45s — actually, recalculating: 30×8 = 240 sec work + 15×7 = 105 sec rest = 345 sec = 5m 45s).

The config card shows the range and step size for each field. While a timer is running, the steppers are locked.

4. Start your session

Tap Start (or Restart if you've already completed a session).

If bonded, you feel:

• 3 strong buzzes immediately — the opening signal to start Work.

What you'll see:

• The countdown ring begins to fill as the phase progresses.
• The large number counts down: 30, 29, 28… (in your Work/Rest duration).
• The phase label stays visible: WORK or REST.
• A "Session" progress bar shows elapsed / total time for the whole workout.

5. Train through the intervals

WORK phase:

• Go at your chosen intensity (full sprint, heavy lift, etc.).
• The strap will buzz a 3-2-1 tick in the last 3 seconds — prepare for REST.

REST phase:

• Recover at your pace (walk, light movement, catch your breath).
• The strap will buzz a 3-2-1 tick in the last 3 seconds — prepare for the next WORK block.
• 1 buzz marks the transition from WORK to REST (shorter cue for the mental shift).

Round indicator:

• The round counter at the top right updates after each rest block: "ROUND 1/8", "ROUND 2/8", etc.

6. When done

After the last WORK block finishes:

• The phase changes to DONE ✓.
• The countdown stops at 0.
• You feel 5 long buzzes — a celebratory signal.
• The status shows "Complete".

7. Review and restart

The session overview card shows:

• Elapsed / Total time (e.g., "5:45 / 5:45").
• Work, Rest, Rounds settings.
• A progress bar reflecting the full session.

Tap Restart to run the same config again, or adjust the sliders and start fresh.

Tips

• Beginner-friendly settings: 20 sec Work / 10 sec Rest / 10 Rounds (about 5 minutes). Gives you time to find a rhythm.
• No equipment needed: You can do Intervals anywhere — bodyweight burpees, sprints, shadow boxing, etc. The strap just times you.
• Tabata-style: Try 20 sec Work / 10 sec Rest / 8 Rounds (the classic high-intensity protocol).
• Trust the haptics: Once you've felt the buzz pattern a few times, you don't have to look at the screen. The 3-2-1 tick at the end of each phase gives you time to mentally prepare for the next one.
• Adjust on the fly: If a setting doesn't feel right mid-session, pause, adjust the config, and restart. (Your current session will reset to the start of Work in Round 1.)
• Use Intervals to boost strain: Short, intense intervals accumulate strain quickly — a good way to add a high-intensity day to your weekly training load.

Haptic pattern reference

For clarity, here's the complete buzz sequence:

Event	Buzz pattern	Meaning
Session start (starting fresh)	3 buzzes	Go! Start your work interval.
Work → Rest transition	1 buzz	Recovery phase begins.
Rest → Work transition	3 buzzes	Next round begins; get ready to work hard.
Last 3 seconds of any phase	1 buzz per second (3-2-1 tick)	Prepare for the next phase; count down with the strap.
Session complete	5 long buzzes	You're done!
Pause (while paused)	(none)	Haptics are silent while the timer isn't running.

Troubleshooting

Issue	Solution
No buzz cues felt during a session	Check the status row — it should say "Buzz cues on" if bonded. If it says "Connect strap for buzz cues", your strap isn't bonded. Go to Live, scan and bond, then return. If bonded but still no buzzes, try a Test buzz on the Live screen. If the test fires, re-start your interval session. If not, restart the Live connection.
Timer seems stuck	Tap Pause, then Start again. The phase timer resets.
I lost count of which round I'm on	The round counter at the top right shows "ROUND X / Y" in real time. Glance at it during REST if needed.
Session won't start	Make sure you're not already running. If the phase is DONE, tap Restart instead of Start.
Buzz pattern feels off	The most common issue is a bonded strap that loses connection mid-session. If buzzes drop out, pause and return to the Live screen to check connection status.

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Platform differences

macOS

• Sidebar navigation: click Breathe or Interval Timer in the left sidebar.
• Strap status: check the connection pill at the bottom of the sidebar or the status pill at the top of each screen.
• Menu-bar extra: a heart dot shows your live HR; click it to see a quick strap-status popover.

Android

• Bottom-nav: swipe to or tap the Breathe / Intervals icon in the bottom navigation.
• Strap status: check the status pill at the top of each screen or the connection status in the Live screen.
• No menu-bar equivalent; open NOOP directly for real-time HR.

Both platforms sync the same BLE stream, HRV math, and buzz patterns — the experience is functionally identical.

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When to use each feature

Use Breathe when:

• You want to practice relaxation and HRV coherence.
• You have 5–15 minutes to focus on a paced breathing session.
• You're interested in seeing how your parasympathetic nervous system responds to rhythmic breathing.
• You're between intense workouts and want a calming interlude.

Use Intervals when:

• You're doing time-based high-intensity training (HIIT, Tabata, Emom-style work).
• You want to train hands-free without staring at a phone or watch.
• You need to quickly add a high-strain workout to your day.
• You're training a sport or drill that benefits from short, hard bursts.

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Further reading

• Features — overview of all NOOP screens.
• Strap Support and Pairing — detailed strap bonding and troubleshooting.
• FAQ — common questions about haptics, BLE connection, and data.
• Troubleshooting — for broader connection and app issues.

Not medical advice. HRV, recovery, and coherence are wellness metrics, not clinical readings. Breathing exercises and interval training are physical activities — consult a healthcare provider if you have underlying health conditions or are new to intense exercise.