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We invite you to browse the HeartMath Institute's extensive collection of research studies, articles, and other materials.

58 results for sleep

Solution for Sleeplessness - HeartMath Institute

Resources Published: Jan. 29, 2026January 29, 2026

www.heartmath.org/resources/solutions-for-stress/overcoming-sleeplessness/

Adequate sleep on a regular basis is as essential to well-being as the air we breathe. Proper rest is necessary for maintaining cognitive sharpness, emotional balance and cardiovascular health as well as the efficient functioning and synchronization of all our physical systems. Conversely, inadequat...

Development and Evaluation of a Cardiac Coherence Index for Sleep Analysis - HeartMath Institute

Research Published: Jan. 1, 2020January 1, 2020

www.heartmath.org/research/research-library/basic/development-evaluation-of-cardiac-coherence-index-sleep-analysis/

Cardiac coherence measurement is an established technology in biofeedback systems for stress release. Studies have typically been conducted with participants during ordinary waking consciousness, yet cardiac coherence during sleep may be even more important in illness prevention and health promotion...

Stress Management Based on Trait-Anxiety Levels and Sleep Quality in Middle-Aged Employees Confronted with Psychosocial Chronic Stress - HeartMath Institute

Research Published: Jan. 1, 2014January 1, 2014

www.heartmath.org/research/research-library/organizational/stress-management-based-on-trait-anxiety-levels-and-sleep-quality/

A stress management program using cardiac coherence was implemented after an organizational down-sizing. The study was conducted in nine voluntary workers in order to evaluate the efficiency of the pro-gram. A baseline evaluation was conducted on psychological variables (anxiety, perceived-stress, w...

HeartMath Resilience Trainer Certification | Coherence Advantage

Training Published: Feb. 23, 2026February 23, 2026

www.heartmath.org/training/certified-trainer/

Join the global community of HeartMath Certified Professionals and be a positive force in the lives of others. Teach the art and science of shifting into an optimal state that creates the foundation necessary for clearer thinking, wiser choices, maintaining composure in times of chaos or stress, bet...

Reducing Stress with HeartMath Techniques for Emotional Balance

Resources Published: Jan. 29, 2026January 29, 2026

www.heartmath.org/resources/solutions-for-stress/reducing-stress/

HeartMath Institute’s long years of scientific research and clinical trials have helped improve thousands of people’s lives worldwide. Whether you, a friend or loved one is seeking help for job stress, anxiety, fatigue, sleeplessness or another stressful condition, you will find proven, easy-to-use ...

Solutions for Stress - HeartMath Institute

Resources Published: Jan. 29, 2026January 29, 2026

www.heartmath.org/resources/solutions-for-stress/

HeartMath Institute’s long years of scientific research and clinical trials have helped improve thousands of people’s lives worldwide. Whether you, a friend or loved one is seeking help for job stress, anxiety, fatigue, sleeplessness or another stressful condition, you will find proven, easy-to-use ...

Giving A Voice To Trees - HeartMath Institute

Articles of the Heart Published: Oct. 12, 2022October 12, 2022

www.heartmath.org/articles-of-the-heart/giving-a-voice-to-trees/

A new generation of scientists is showing that plants and trees are intelligent and aware; they process information, sleep, remember, and communicate with one another. They have at least 20 different types of senses, including ones that roughly correspond to our five senses. They also have additiona...

Shift Work and Heart Rate Variability Coherence - HeartMath Institute

Research Published: Jan. 1, 2018January 1, 2018

www.heartmath.org/research/research-library/basic/shift-work-and-hrv-coherence-pilot-study-among-nurses/

This study used ambient heart rate monitoring among health care workers to determine whether a novel measure of heart rate variability (HRV), as well as sleep disturbances, fatigue, or cognitive performance differed among non-rotating night shift nurses relative to those working permanent day shifts...

Whisper Thoughts and Feelings - HeartMath Institute

Articles of the Heart Published: Nov. 8, 2016November 8, 2016

www.heartmath.org/articles-of-the-heart/heartmath-tools-techniques/whisper-thoughts-feelings/

Whisper Thoughts and Feelings Are whisper thoughts running through your head from the time you get up until you go to sleep? These can be a constant source of energy drain. Let’s take a deeper look and explore some suggestions that may help. Most of us are familiar with long running whisper thoughts...

HeartMath Certified Mentor Application | Apply for Coherence Advantage Certification

Training Published: Feb. 27, 2026February 27, 2026

www.heartmath.org/training/certified-mentor/application/

Join the global community of HeartMath Certified Professionals and be a positive force in the lives of others. Teach the art and science of shifting into an optimal state that creates the foundation necessary for clearer thinking, wiser choices, maintaining composure in times of chaos or stress, bet...

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