When the Body Forgets How to Rest
Many of us live with a body that never fully switches off. We wake up and reach for the phone, rush through the day, and lie in bed at night with a busy mind and a tight chest. We know we should relax, but knowing is not the same as feeling it. More and more people are now turning to gentle practices like Reiki to find their way back to calm, and at the same time, science is taking a closer look at the vagus nerve, the body's own pathway to rest. This article brings both together and explores what we know, what we are still learning, and what you can practise today.
Can Reiki Help Calm the Vagus Nerve?
Reiki may help the body relax, and some small studies have found signs of increased parasympathetic activity during Reiki, such as changes in heart rate variability. However, science has not shown that Reiki directly stimulates the vagus nerve. What we can say is that Reiki offers gentle touch, stillness and a feeling of safety, which are all conditions that support the body's natural relaxation response. Reiki is a complementary practice and not a replacement for medical care.
Meet the Wandering Nerve
The word vagus comes from Latin and means wandering, and the name fits well. The vagus nerve starts in the brainstem and travels down through the neck, chest and belly, connecting with the heart, the lungs and the digestive organs on its way. It is the main nerve of the parasympathetic nervous system, often called the rest and digest system. When this system is more active, the heart tends to slow down, breathing becomes deeper and digestion can work more smoothly.
Here is a surprising fact that many people do not know: around 80% of the fibres in the vagus nerve carry information from the body up to the brain, and only about 20% carry signals down. In simple words, your heart, lungs and belly are constantly reporting to your brain how you are doing. This helps to explain why we cannot always think our way into calm. When the body is tense, the brain receives that message, but when the body receives slow breathing, kind touch and a sense of safety, the message can change too.
What Science Says About Reiki and Relaxation
Researchers often use heart rate variability, or HRV, to study the nervous system. HRV is the small natural change in time between one heartbeat and the next. It is not a direct measure of the vagus nerve, but certain parts of HRV can reflect parasympathetic activity, and higher HRV is generally linked with better stress resilience.
One of the most interesting studies was carried out at Yale-New Haven Hospital and published in 2010 in the Journal of the American College of Cardiology. Patients recovering from a heart event who received Reiki showed a greater increase in high-frequency HRV, a marker linked to parasympathetic activity, than patients who rested or listened to slow music. They also reported a better mood. The Reiki group was small, with only 12 patients analysed, and the researchers could not say which part of the Reiki experience caused the change. A 2022 systematic review also found that Reiki may help to reduce stress and anxiety symptoms, while noting that more high-quality research is needed.
So it is important to stay honest. The evidence is promising but still limited and sometimes mixed. Reiki can be a beautiful support for relaxation and well-being, and it works best alongside, not instead of, professional medical care.
What the Ancient Yogis Taught About Breath and Calm
Long before anyone measured HRV, the yogis of India explored the inner world through their own language and experience. In yoga and Ayurveda, the life force is called prana, and it moves through subtle channels called nadis. The ancient teachings describe five forms of prana, called vayus. Prana vayu is connected with the chest, the breath and the heart, while apana vayu moves downward and is connected with letting go and digestion. These are not anatomical descriptions in the modern sense, but it is fascinating that the yogis paid such close attention to the same areas of the body where the vagus nerve travels. Two very different ways of understanding the body seem to meet here.
The yogis also discovered that sound and breath can deeply quiet the mind. In Bhramari pranayama, the humming bee breath, you hum softly while breathing out. Humming naturally makes the out-breath longer, and slow breathing with a longer exhale is one of the best-studied ways to support relaxation. A small study from 2002 also found that humming increased nitric oxide in the nose around fifteen times compared with quiet breathing. This does not prove that humming improves vagal tone, but it shows that this ancient practice has real effects on the body that science is only beginning to understand.
Reiki itself comes from Japan, and it carries a similar idea. Its founder, Mikao Usui, taught that universal life energy, called ki, flows through all living beings, and that healing is supported when this flow becomes free and balanced. His five Reiki principles begin with the words just for today, do not anger and do not worry. Since anger and worry are two of the strongest triggers of stress, these simple principles can also be seen as a daily invitation to a calmer mind.
How Reiki May Support Relaxation
In more than three decades of teaching meditation and healing, I have seen again and again that many people seem to relax and open up more easily when they feel safe. When I give Reiki, I often notice how a person's breathing slows down after a few minutes, how the shoulders soften and how the face becomes peaceful. From the Reiki point of view, this is the moment when energy can flow freely again. From the scientific point of view, it looks like the body is moving towards its natural rest and digest state.
Several parts of a Reiki session may help to create this shift. Gentle touch may help some people feel safe and supported, while the quiet atmosphere of a Reiki session can encourage relaxation, even when the hands are held above the body. The session also offers stillness, which is rare in modern life, as the person simply lies down with closed eyes and nothing to do. Finally, there is the calm presence of the practitioner. Researchers call the way our nervous systems respond to each other co-regulation, and many people feel that resting next to someone who is deeply calm helps them to settle too.
Signs That Your Nervous System Needs Support
Many people do not notice how stressed their body is until they finally relax. Common signs are shallow breathing, a tight jaw or shoulders, trouble falling asleep, a sensitive stomach, and feeling tired but wired at the same time. These are not weaknesses, but possible signs that the body has been under stress for a long time. The encouraging news is that regular practices of breath, sound, touch and stillness can help the body return to calm more easily over time, and Reiki can be one part of this, together with meditation, time in nature, good sleep and loving relationships.
A student from one of my Reiki trainings described this change beautifully. Before discovering Reiki, constant pressure at work was slowly draining their energy, and life often felt overwhelming and uncertain. During and after the training, something shifted, and a deep sense of calm, relaxation and groundedness began to replace the old tension. Challenges that once caused frustration could now be met with patience and a clear mind, and with this clarity came a new feeling of inner strength and trust in life. As this student put it, it is "just a wonderful feeling which I didn't know." Life does not suddenly become free of difficulties, but we can learn to meet them from a place of peace instead of stress.
A 5-Minute Practice for Everyday Calm: Heart and Belly Humming
This short practice combines the caring touch of Reiki with the ancient humming breath of the yogis. You can do it in the morning, in the evening before sleep, or in a quiet corner at work. You only need five minutes and a place where you can sit or lie comfortably.
Begin by closing your eyes and placing your right hand on the centre of your chest and your left hand on your belly, just below the navel. Feel the warmth of your hands and let your shoulders drop. Take a few natural breaths and simply notice the gentle rise and fall under your palms, without trying to change anything.
Now breathe in comfortably through the nose, and as you breathe out, keep your lips gently closed and make a soft humming sound, like a bee. Let the out-breath become a little longer if it feels easy, but never force it. If you feel dizzy or uncomfortable at any time, simply stop humming and return to your natural breath. Continue for about three minutes, and whenever your mind wanders, bring your attention back to the gentle vibration under your hands.
For the last minute, stop humming and rest with your hands where they are. Breathe quietly and silently repeat the first Reiki principle: just for today, I will not worry. Then notice how your body feels compared to five minutes ago. Many people feel warmer, softer or more peaceful, and even small changes like these are a sign that you have given yourself a moment of true rest.
Frequently Asked Questions
Does Reiki stimulate the vagus nerve?
There is no scientific proof that Reiki directly stimulates the vagus nerve. However, some studies have measured changes linked to relaxation and parasympathetic activity during Reiki, such as changes in heart rate variability. Researchers are still exploring how and why these effects happen.
Can Reiki help with stress and anxiety?
Some studies suggest that Reiki may help to reduce feelings of stress and anxiety, and many people experience it as deeply calming. The research is still limited, so Reiki is best seen as a complementary practice. If you live with ongoing anxiety or health concerns, it is important to also work with a qualified health professional.
Can I practise calming breathing and self-Reiki at home?
Yes, and this is one of the beautiful things about both practices. The five-minute humming practice above can be done anywhere, and once you have learned Reiki, you can also give yourself Reiki every day. If you would like a full routine, you can follow A Simple Self-Reiki Routine You Can Practice at Home Every Day.
Going Deeper With Reiki
If you are new to Reiki and want to understand its roots, you can read What is Reiki? A Beginner's Guide to Reiki Healing. And if you feel called to bring this healing into your own hands, Punnu Wasu teaches the Usui Reiki Training in Bali, where ancient wisdom and modern understanding come together in a practical and heart-centred way.
In the end, relaxation is not something we have to fight for. It is the natural state of a body that feels safe. Whether through a Reiki session, a humming breath or a quiet moment with your hands on your heart, every time you give your body this feeling of safety, you create more space for rest, balance and well-being.
Scientific References
Friedman, R. S. et al. (2010). Effects of Reiki on autonomic activity early after acute coronary syndrome. Journal of the American College of Cardiology, 56(12), 995–996.
Zadro, S. and Stapleton, P. (2022). Does Reiki benefit mental health symptoms above placebo? Frontiers in Psychology, 13.
Weitzberg, E. and Lundberg, J. O. N. (2002). Humming greatly increases nasal nitric oxide. American Journal of Respiratory and Critical Care Medicine, 166(2), 144–145.