- Theory Under DebateFoundational8 min
Heart Rate Variability: What It Can and Cannot Tell Us
Why HRV is useful in some contexts but should not be treated as a direct measurement of emotional safety.
- ArticleFoundational6 min
HRV Biofeedback May Be Improving More Than Heart Rate
For years, heart rate variability (HRV) has been used as a marker of autonomic nervous system function. Most conversations have focused on whether someone can increase their HRV through breathing exercises or biofeedback. Emerging research in 2026 suggests something even more interesting: HRV biofeedback may not simply improve physiological regulation — it may also strengthen interoception, the ability to accurately recognize and interpret signals coming from within the body.
- ArticleFoundational5 min
Why Does My Heart Beat Differently in Different Rooms?
Heart-rate variability is exquisitely context-sensitive. Rooms, faces, and voices produce measurable autonomic signatures — which is why the body feels different in different spaces long before the mind decides why.
- ArticleFoundational11 min
HRV as a Window Into Nervous-System State
Heart rate variability—the beat-to-beat fluctuation in the interval between successive heartbeats—has become one of the most widely measured biomarkers in
- ArticleIntermediate7 min
Supporting Life With Pain Does Not Make Pain Imaginary
What can a mindfulness study tell us about living with endometriosis-related pain? A small pilot analysis examined attention and heart-rate variability, with findings that warrant further study. It did not show that mindfulness removes endometriosis or that pain is caused by a failure to regulate. This article explains how additional support can be discussed without diminishing the reality of the condition.
- ArticleFoundational5 min
Why Does Breathing Slower Actually Change How I Feel?
Slow breathing is not a folk remedy. It engages the vagus nerve, raises heart-rate variability, and shifts the autonomic balance toward parasympathetic dominance — measurably changing emotional state.