{"product_id":"coherence-hrv-breathing-trainer","title":"MitoSyne Coherence HRV Breathing Trainer","description":"\u003cp\u003e\u003cstrong\u003eA visual and haptic breathing pacer for slow, comfortable practice, with optional non-diagnostic pulse-interval feedback.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eCoherence guides adjustable sessions from 4.5 to 7 breaths per minute without requiring a phone in view.\u003c\/p\u003e\u003ch2\u003eA closer look\u003c\/h2\u003e\u003cp\u003eCoherence makes slow breathing easier to practice consistently. A soft light ring and optional haptic cue expand and contract at the selected pace, so the session can continue without watching a phone. A broad pace range and sessions from three to twenty minutes leave room for individual comfort rather than forcing one pattern on every user. The sensor model adds pulse-interval trends as reflective feedback, not as a clinical HRV assessment. Slow breathing around an individual's comfortable resonant range can increase short-term heart-rate variability and reduce some stress measures, while breathing too deeply or too quickly can cause dizziness or tingling. Coherence therefore favors quiet, low-volume breathing and an unforced rhythm over chasing a target score.\u003c\/p\u003e\u003ch2\u003eThe details that matter\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eAdjustable 4.5-7 breaths per minute with equal or extended-exhale modes\u003c\/li\u003e\n\u003cli\u003eVisual and haptic guidance that works without a phone\u003c\/li\u003e\n\u003cli\u003e3\/5\/10\/15\/20-minute sessions and quiet night mode\u003c\/li\u003e\n\u003cli\u003eOptional PPG sensor for non-diagnostic pulse-interval trends\u003c\/li\u003e\n\u003cli\u003eNo subscription required; session history stored locally\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhy it belongs\u003c\/h2\u003e\u003cp\u003eCoherence supports a repeatable skill with restrained feedback, keeping attention on the quality of the practice rather than a grand physiological promise.\u003c\/p\u003e\u003ch2\u003eWhat the evidence supports\u003c\/h2\u003e\u003cp\u003eSlow paced breathing and HRV biofeedback show modest benefits for autonomic measures and stress-related outcomes across heterogeneous studies. The optimal pace varies.\u003c\/p\u003e\u003ch2\u003eWhat it is designed to do\u003c\/h2\u003e\u003cp\u003eGuides slow paced-breathing sessions and, in the sensor model, displays non-diagnostic pulse-interval trends for personal review.\u003c\/p\u003e\u003ch2\u003eUse and care\u003c\/h2\u003e\u003cp\u003eStop if lightheaded, numb, short of breath or uncomfortable. People with significant respiratory or cardiovascular conditions should discuss paced-breathing practice with a clinician.\u003c\/p\u003e","brand":"MitoSyne","offers":[{"title":"Default Title","offer_id":48952410177706,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0719\/4306\/1674\/files\/hp-moonbird-teal-2026.png?v=1785259146","url":"https:\/\/mitosyne.com\/products\/coherence-hrv-breathing-trainer","provider":"MitoSyne","version":"1.0","type":"link"}