HRV Coherence Breathing Dr Brett Hayes · drbretthayes.com Ready — Rhythm 5s in / 5s out (coherence) 4s in / 6s out (calming) 4s in / 4s out 4s in / hold / 4s out Session 5 min Begin Reset Singing bowl tones ✦ Session complete ✦ Take a moment to notice how you feel. Close