Your Provider Has Recommended Precise Breath

What the Research Shows

• Stress & Anxiety — A meta-analysis of 24 studies found that HRV biofeedback using resonant frequency breathing was associated with significant reductions in self-reported stress and anxiety (Goessl et al., 2017).
• Blood Pressure — Controlled studies have associated resonant frequency breathing with reductions in blood pressure and improved baroreflex sensitivity (Lin et al., 2012).
• Autonomic Balance — Regular practice has been associated with strengthened autonomic regulation and improved heart rate variability over time (Lehrer & Gevirtz, 2014).

These findings describe published research on resonant frequency breathing as a practice. Precise Breath is a wellness tool — not a medical device. Individual results may vary.

Getting Started

1. Get a Chest Strap Sensor
   You will need a Bluetooth chest strap heart rate monitor. The Polar H10 is recommended for its research-validated accuracy. The Garmin HRM Dual also works. Wrist sensors and smartwatches are not supported.
2. Download Precise Breath
   Available now on Google Play (Android); coming soon to the App Store (iOS). A one-time Premium unlock ($14.99) enables the HRV analysis modes your provider recommends.
3. Run Your First Calibration
   The Calibrate session (~14 minutes) tests 5 breathing rates to find your starting point. Turn on Do Not Disturb and sit comfortably — no electrode preparation needed (our electrode test found dry, water and gel gave the same signal quality from the first minute).
4. Practice Daily
   Use Resonate mode for 15–20 minutes each day at your identified rate. Use Measure mode periodically to refine your frequency over time.