The Benefits of Reiki for Body, Emotions and Spirit: What People Feel and What Studies Show

People who try Reiki often struggle to explain what it did. They lay still for an hour, someone's hands rested lightly on them, and they got up feeling different. Softer. Slower. Sometimes tearful, sometimes just very rested.

That vagueness is part of why Reiki gets both loved and dismissed. If you are on a healing path and wondering whether Reiki is worth your time, you want something clearer than "it's energy" and kinder than "it's placebo." Below we look at the benefits of Reiki on three levels, physical, emotional and spiritual, with what the research says at each one, including the studies on brain waves.

The short answer

The main benefits of Reiki people report are deep physical relaxation, lower anxiety, emotional release, better rest, and a felt sense of coming back to themselves. Research supports some of this, mostly for anxiety and short-term relaxation, though studies are small and mixed. Reiki has not been shown to treat any disease, and its traditional energy explanation has not been confirmed by science.

Physical benefits: what happens in the body

Reiki's most consistent physical effect is relaxation. You lie fully clothed, nothing is asked of you, and light touch moves slowly from head to feet. For a body that has been braced for weeks, that stillness is rare.

People often notice:

• Heaviness and warmth. The body sinks into the table, and the hands can feel hotter than expected.
• Slower breathing. The breath tends to lengthen without any instruction.
• Muscle release. Shoulders drop, the jaw unclenches, the belly softens.
• Deep rest. Some people drift between waking and sleep, and others fall asleep completely.

One small study measured this directly. In 2004, researchers randomly assigned 45 people to Reiki, sham Reiki given by someone untrained, or simple rest. Heart rate and diastolic blood pressure dropped significantly more in the Reiki group than in either of the others. The authors were careful: it was a pilot, the changes were small, and larger studies are needed. Still, it suggests something real happens in the autonomic nervous system, the part that runs heart rate and digestion without your effort.

Touch helps too. People instinctively hold a part of the body that hurts, and slow, safe contact is one of the oldest ways humans calm each other down.

Emotional benefits: anxiety, release and feeling held

The emotional benefits of Reiki have the strongest research behind them, mainly for anxiety. A 2024 meta-analysis in BMC Palliative Care pooled 13 controlled studies with 824 participants and found that Reiki reduced anxiety, with the clearest effects in people living with chronic illness and in general adults. The results varied a lot between studies, and most of the trials were small.

In the room, people tend to describe it more simply:

• A quieter mind. Thoughts slow down when there is nothing to do and nowhere to go.
• Feelings that surface. Tears, a memory or a wave of sadness can arrive with no clear trigger, then pass.
• Being held without being fixed. Nobody analyses you or asks you to explain.

Some people carry emotions they have never had room to feel. Reiki offers that room without asking for words. At SOMA, a Reiki session moves through arriving, preparation, the hands-on practice and integration, so whatever comes up has time to settle and be talked through if you want to.

Reiki and brain waves: what EEG studies show

Brain waves are the rhythmic electrical activity of the brain, measured with an EEG. Different speeds tend to go with different states:

Deep relaxation tends to shift the brain from beta toward alpha and theta. A 2009 EEG study of meditation from the University of Sydney and the Norwegian University of Science and Technology found more theta in the front of the brain and more alpha toward the back during meditation than during ordinary rest. The drowsy, between-worlds state some people describe during Reiki fits that same pattern.

Reiki itself has been studied far less. The best-known EEG study, published in 2014 in the Journal of Alternative and Complementary Medicine, recorded the brains of practitioner and recipient at the same time. In pairs where an experienced practitioner gave Reiki, the theta rhythms of the two brains became more synchronised over ten minutes. Pairs with an untrained person did not show this. The study had only nine pairs, so it is a first look.

We are cautious with brain-wave claims. Some websites say Reiki "puts you into theta" or "heals at delta," but most of those claims trace back to unpublished sessions that never went through peer review. So far, Reiki seems to bring on the kind of deep relaxation linked with alpha and theta activity, and one small study found a shared theta rhythm between giver and receiver. Anything beyond that is still unknown.

Spiritual benefits: coming back to yourself

The spiritual side of Reiki is the hardest to measure and, for some people, the heart of it.

Traditionally, Reiki is described as working with ki, the life energy that flows through all living things. Science has not found evidence of this energy field, and the US National Center for Complementary and Integrative Health says so plainly. When we speak about energy at SOMA, we are speaking from tradition and from lived experience, and we do not present it as proven physiology.

What people often describe on a spiritual level:

• Presence. An hour of stillness can feel like returning to yourself after a long time away.
• Connection. A sense of being part of something larger, which some people call spirit and others simply call peace.
• Gratitude and ease. A softening toward life that lasts beyond the session.

Reiki also comes with a simple daily practice that carries this into ordinary days. The five Reiki precepts read:

• Just for today, do not worry.
• Just for today, do not anger.
• Just for today, respect all life.
• Just for today, work honestly.
• Just for today, be grateful.

They ask for nothing mystical. For some practitioners, living them is the whole of the spiritual practice. For more on where Reiki comes from and what a session looks like, see our guide to what Reiki is.

How to get the most from Reiki

The benefits of Reiki depend a lot on how it is held. The body drops its guard when a session feels safe, and rushing or pushing tends to undo that.

At SOMA, every Reiki session is trauma-informed. You choose whether hands rest on the body, hover above it, or skip certain areas, and you can change your mind at any time. Nothing is forced to happen, and a quiet session counts as much as an emotional one.

Reiki is generally considered safe, and NCCIH reports no known harmful effects. It does not diagnose or treat any condition. Use it alongside medical and psychological care, and see your doctor about any symptom that is persistent or new.

If you would like to experience Reiki held slowly and with care in Pai, you are welcome to contact us for bookings. We can talk through what you are looking for before your first session.

Key takeaways

• Expect relaxation first. It is the most reliable benefit and the base for everything else.
• Treat strong brain-wave claims online with care, and look for a named, published study behind them.
• Give emotions room afterward with a slow evening and a little time to reflect.
• Try the five precepts for a week to see what Reiki feels like outside the session.
• Keep any medical or psychological care in place and let Reiki sit beside it.

Definitions

EEG: Electroencephalography, a test that records the brain's electrical activity through sensors on the scalp.

Theta coherence: The degree to which theta rhythms in two brain areas, or two brains, rise and fall together.

Meta-analysis: A study that pools the results of many earlier studies to find an overall effect.

Sources

• Therapeutic effects of Reiki on interventions for anxiety: a meta-analysis (Guo et al., BMC Palliative Care, 2024)
• Autonomic nervous system changes during Reiki treatment: a preliminary study (Mackay et al., Journal of Alternative and Complementary Medicine, 2004)
• Enhanced coherence within the theta band between pairs of brains engaging in experienced versus naive Reiki procedures (Ventura and Persinger, Journal of Alternative and Complementary Medicine, 2014)
• Brain waves and meditation (ScienceDaily, on Lagopoulos et al., 2009)
• Reiki: What You Need To Know (NCCIH)