About BioBreathe™

---

BioBreathe by AlcheMood™ is a companion wellness experience for Apple Watch and iPhone, designed to support guided breathing, self-awareness and personal reflection.

BioBreathe combines structured breathing guidance with Apple Watch haptics, visual cues and real-time heart-rate information from Apple Health. Recent live heart-rate readings help inform the timing of the guided breathing experience.

Users can choose sessions ranging from 1 to 20 minutes and record how they feel afterward by selecting More Activated, About the Same or More Settled.

Users may also enable optional musical sound cues that accompany the haptic guidance and mark each breathing phase: inhale, pause, exhale and final pause. The sound cues can be turned off for a quieter, haptic-guided experience.

The companion iPhone app displays session history and self-reported trends, allowing users to explore how session duration may relate to their post-session experience.

BioBreathe™ was created by AlcheMood LLC, a technology company developing privacy-conscious digital wellness products grounded in behavioral neuroscience, thoughtful design, and human-centered technology.

BioBreathe is intended solely for general wellness, breathing practice, mindfulness, self-awareness, and personal reflection.

It is not medical care, mental health treatment, psychotherapy, diagnosis, crisis support, emergency monitoring, or a substitute for professional care.

BioBreathe™ is a guided-breathing experience that uses available live heart-rate readings from Apple Watch to inform the timing of its haptic breathing guidance during a session.

Unlike a conventional breathing timer that uses the same fixed timing for every user, BioBreathe’s guidance may respond to recent heart-rate information as new readings become available.

The result is a responsive, screen-free breathing experience shaped by recent heart-rate information.

Slow-paced breathing has been studied for its effects on the interaction among respiration, heart rate, blood pressure, baroreflex activity, and cardiac autonomic regulation.

A systematic review and meta-analysis of 223 studies found that voluntary slow breathing increased measures of vagally mediated heart-rate variability during breathing, immediately following a breathing session, and following repeated practice. [1]

A separate systematic review and meta-analysis found that slow-paced breathing produced immediate cardiovascular changes, including increases in RMSSD and SDNN heart-rate variability, a modest reduction in heart rate, and reduced systolic blood pressure.  [3]

Effects on perceived stress and negative emotion were smaller and less consistent than the cardiovascular findings. [3]

Breathing near approximately six cycles per minute—about 0.1 Hz—has been widely studied because it can increase coordination among respiration, heart rate, blood pressure, and baroreflex-related cardiovascular oscillations. [4]

A 2025 experimental study found that six-breaths-per-minute conditions increased heart-rate variability more than square breathing or 4-7-8 breathing under the study conditions. The researchers also observed a greater possibility of mild over-breathing. [2]

In a study involving 75 athletes, measures of cardiac vagal activity were higher during slow-paced breathing at five to seven cycles per minute than during spontaneous breathing. [5]

These findings provide general scientific context for slow-paced breathing. No single breathing rate has been established as optimal for every individual, and BioBreathe does not claim to identify a user’s clinical resonance frequency.

Respiration and heart rhythm interact dynamically. Heart rate commonly rises during inhalation and falls during exhalation—a phenomenon described as respiratory sinus arrhythmia or respiratory heart-rate variability and influenced by cardiac parasympathetic activity. [4]

BioBreathe uses available recent heart-rate readings to inform AlcheMood’s proprietary haptic-pacing method. It does not perform a clinical resonance-frequency assessment.

The resulting guidance can be followed without continuously watching a screen.

BioBreathe combines:

• Available live heart-rate readings from Apple Watch
• Heart-rate-informed breathing guidance
• Haptic cues marking the inhale, pauses, and exhale
• Optional musical sound cues synchronized with each breathing phase
• The option to use haptic guidance without musical sound cues
• Session lengths ranging from 1 to 20 minutes
• Post-session reflections selected by the user
• Private session-history synchronization between the paired Apple Watch and iPhone
• A hands-free experience that does not require continuous visual attention

BioBreathe is not simply a fixed breathing timer. 

Recent heart-rate information helps inform the timing of the guided experience, while haptic and optional musical cues provide clear transitions through each breathing phase.

BioBreathe’s musical sound cues are an optional guidance feature. They are not presented as music therapy or medical treatment.

The Nervous System Trend is a visual history of the user’s own post-session reflections. It is not a physiological measurement or medical calculation.

After completing a BioBreathe session, the user may select one of three responses describing how they feel:

• More Activated
• About the Same
• More Settled

Each colored dot represents one completed session and the response selected by the user.

The dot’s position represents the user’s self-reported post-session response. The dot’s color represents the duration of the breathing session:

• Warmer red and reddish-purple shades represent shorter sessions.
• Purple and blue-purple shades represent intermediate-length sessions.
• Bluer shades represent longer sessions, up to 20 minutes.

The color does not represent stress level, autonomic activity, symptom severity, heart rate, or a medical interpretation. A blue dot does not mean that the user’s nervous system was more regulated than a red dot. It means only that the breathing session was longer.

The Nervous System Trend does not use stored heart-rate measurements, calculate vagal tone, determine sympathetic or parasympathetic activity, diagnose a condition, or independently determine how the user feels. It organizes the user’s selected responses and session durations to support personal reflection over time.

The term “Nervous System Trend” refers to the user’s subjective pattern of feeling more activated, about the same, or more settled after guided breathing sessions. Individual experiences may vary.

BioBreathe’s heart-rate-informed pacing method is a proprietary AlcheMood implementation informed by established research on slow-paced breathing, heart-rate variability, baroreflex physiology, and respiratory-cardiac interaction.

The exact BioBreathe protocol has not been evaluated in a published clinical trial.

Existing research does not establish that:

• Streaming heart rate alone measures vagal tone or complete autonomic function
• A decreasing heart rate conclusively demonstrates nervous-system regulation
• BioBreathe identifies a clinical resonance frequency
• Every user will experience the same physiological or psychological response