Warmth in the abdomen. A spreading calm through the chest. Tingling during Reiki or a sense of expansion in meditation. What might these experiences reveal about the relationship between bodily energy and awareness?
Chakra traditions offer maps of attention, vitality and spiritual development. Physiology explores heat production, metabolism, neural activity and electrical signalling. Bringing them into conversation can generate questions that neither vocabulary fully captures alone.
The purpose here is exploration. Studies of contemplative practice show that spiritual disciplines can be accompanied by measurable physiological changes. Nourishment supplies the living system in which those changes occur. How these findings relate to chakra experience deserves a curious, specific discussion.
1. Thermogenesis: the body continually makes heat
Thermogenesis is heat production. Basal metabolism, digestion, muscular work and specialized tissue activity all contribute. The body also regulates heat loss through circulation, sweating and other processes.
The hypothalamus helps coordinate thermoregulation alongside other functions of internal balance. Sensation, behaviour, hormonal signals and the environment participate in the response.
When someone notices warmth during spiritual practice, several questions become possible: is skin temperature changing, is muscle activity contributing, or has attention altered the perception of a sensation? Measuring different possibilities can deepen the inquiry.
2. Nourishment, digestion and the felt quality of energy
Digesting, absorbing and processing food requires energy. This contribution to expenditure is called the thermic effect of food. It varies with meal composition and the individual.
Food also provides the materials that support neural activity, muscle function and tissue maintenance. The feeling of being nourished includes more than heat: comfort, satiety, attention and the meaning of a meal can all matter.
Whole plant foods offer many ways to build a satisfying pattern. Legumes, vegetables, fruit, whole grains, nuts, seeds and herbs can support variety and enjoyment. Sufficient energy and attention to nutrients such as vitamin B12 remain important.
A spiritual interpretation may describe the resulting steadiness or vitality as a change in energy. A useful next question is which observable changes accompany that experience for the individual.
3. Mitochondria transform energy, including into heat
Mitochondria use electron transport to help establish a proton gradient that powers ATP production. Cells use ATP for many forms of work. In brown adipose tissue, uncoupling protein 1 can allow energy in that gradient to be released as heat.
This is one example of the body directing energy through different pathways according to conditions. Greater heat output is not automatically the desired outcome; regulation is central.
Could the felt experience of vitality change alongside metabolic function? That is a reasonable question. Identifying a mitochondrial process and identifying a chakra experience remain different tasks that future studies could examine together.
Explore the sources: Vidal P, Stanford KI. (2020). Exercise-Induced Adaptations to Adipose Tissue Thermogenesis. Frontiers in Endocrinology.
4. Movement and metabolism prepare the living system
Muscular activity uses chemical energy and releases heat while creating movement. Over time, training can also change tissue function and the body’s response to physical demands.
Vidal and Stanford reviewed exercise-related changes in adipose tissue, including mitochondrial and signalling responses. Findings about brown-fat thermogenesis vary across conditions and studies, reminding us to examine a particular mechanism rather than assume one universal response.
Movement may also function as preparation for contemplation: a person might find it easier to settle after a walk or feel more connected during yoga. That observation can guide an individual practice while inviting research into the contributing mechanisms.
Explore the sources: Vidal P, Stanford KI. (2020). Exercise-Induced Adaptations to Adipose Tissue Thermogenesis. Frontiers in Endocrinology.
5. Bioelectricity offers another language for bodily organization
Living cells sustain voltage differences across membranes. Ion channels, pumps and chemical gradients contribute to electrical signalling, including the activity of nerves and muscles.
Research reviewed by Zhang and Levin also considers bioelectric patterns in development and tissue organization. The body’s electrical dimension is therefore a substantial field of inquiry.
Chakra practitioners may notice sensations near particular bodily regions. Could patterns of attention, autonomic activity or interoception help explain aspects of these experiences? Could additional relationships emerge from better measurements? Those are open questions; mapping a sensation alone does not identify its mechanism.
Explore the sources: Zhang G, Levin M. (2025). Bioelectricity is a universal multifaced signaling cue in living organisms. Molecular Biology of the Cell.
6. Chakras as a map for asking physiological questions
Chakra systems have varied histories and interpretations within Indian spiritual and contemplative traditions. Contemporary practices often associate centres with regions such as the abdomen, chest and throat, sometimes proposing links with nerve plexuses or endocrine organs.
Moga’s 2022 narrative review explores a small body of chakra-related studies and possible anatomical or physiological associations. The Heartfulness article by van’t Westeinde and Patel offers a yogic and neuroscientific perspective with proposed connections. These are exploratory contributions, rather than a settled anatomical map.
They offer starting points for questions: when attention rests on a centre, what changes in sensation, breathing or neural activity? Are those changes reproducible, and how do practitioners describe them? Does experience depend on training, expectation, nourishment or the setting?
A chakra can be meaningful within practice without requiring that it first be classified as a separate organ. Studying correlates allows the conversation to grow more specific.
Explore the sources: Moga MM. (2022). Is There Scientific Evidence for Chakras? International Journal of Healing and Caring. · van’t Westeinde A, Patel KD. (2022). Heartfulness Meditation: A Yogic and Neuroscientific Perspective. Frontiers in Psychology.
7. Inner heat and meditation: a particularly relevant experiment
G-tummo research is directly relevant to a discussion of contemplative practice and body heat. Kozhevnikov and colleagues measured temperature and EEG during practices involving breathing, muscular tension and visualization.
The small study reported axillary temperature increases during forceful-breath meditation in experienced practitioners. Its analysis suggested that the bodily component contributed to heat production, while visualization helped sustain increases. The anatomical measurement site and the specific practice matter when interpreting the result.
This offers a concrete example of a contemplative discipline engaging measurable physiology. It invites investigation into how focused attention and bodily processes work together, while leaving open how far the findings generalize to other practices or chakra systems.
The research is not an instruction to induce fever or practise prolonged breath-holding. A comfortable meditation can focus on noticing natural warmth and breathing without trying to reproduce an expert technique.
Explore the sources: Kozhevnikov M, et al. (2013). Neurocognitive and Somatic Components of Temperature Increases during g-Tummo Meditation: Legend and Reality. PLOS ONE.
8. Reiki, shamanic practice and changes in awareness
Reiki research and shamanic-state research add other dimensions. Zadro and Stapleton’s review reported promising results for some mental-health symptoms, with limited studies and risk-of-bias concerns. It leaves important questions about Reiki’s effects and mechanisms available for investigation.
Huels and colleagues observed changes in subjective experience and EEG measures during shamanic drumming in experienced practitioners compared with controls. This supports studying the physiological correlates of spiritually meaningful states.
Neither finding identifies a unique chakra frequency. They do show why an inquiry into experience should include practice, training and context. Nourishment could be studied as another factor influencing comfort, attention and participation, rather than assumed to explain the entire experience.
Explore the sources: Zadro S, Stapleton P. (2022). Does Reiki Benefit Mental Health Symptoms Above Placebo? Frontiers in Psychology. · Huels ER, et al. (2021). Neural Correlates of the Shamanic State of Consciousness. Frontiers in Human Neuroscience.
9. Nourishing a practice that belongs to the whole person
Nutrition, movement, rest and environment form the daily conditions in which practice happens. A person who feels hungry, cold, overtired or uncomfortable may experience the same meditation differently from one who feels supported.
Interoception offers a bridge: internal signals contribute to bodily awareness and regulation. A practice that invites attention to the belly or chest may change which sensations are noticed and how they are understood.
Try observing meal timing, hydration, movement, mood and the quality of a gentle practice. Describe sensations before interpreting them. Warmth, ease, connection and clarity may matter in different ways from session to session.
Explore the sources: Wang RL, Chang RB. (2024). The Coding Logic of Interoception. Annual Review of Physiology.
10. From felt energy to questions we can explore
Spiritual energy can name a quality of connection or awareness. Physiological energy can refer to heat, chemical transformations or electrical processes. The relationship between those descriptions is itself a subject for inquiry.
A well-designed study could pair a practitioner’s description with temperature, breathing, heart activity or EEG measurements, while accounting for attention, experience and environmental conditions. A nutrition study could add defined dietary patterns or nutritional status.
The interpretation would still need care: a bodily correlate need not exhaust the personal meaning of an experience. Nor does an experience, by itself, establish a specific mechanism. Keeping both questions visible makes the discussion more useful.
Questions for an unfolding practice
How does nourishment change the way you enter meditation? What happens to warmth and bodily awareness when attention settles? Which aspects of a chakra practice might become clearer through physiological measurement, and which meanings are best described in the practitioner’s own words?
There is room for curiosity, intuition and careful research in the same exploration. The aim is to keep asking better questions about the nourished, responsive and experiencing body.
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Sources for further exploration
- Vidal P, Stanford KI. (2020). Exercise-Induced Adaptations to Adipose Tissue Thermogenesis. Frontiers in Endocrinology.
- Zhang G, Levin M. (2025). Bioelectricity is a universal multifaced signaling cue in living organisms. Molecular Biology of the Cell.
- Moga MM. (2022). Is There Scientific Evidence for Chakras? International Journal of Healing and Caring.
- van’t Westeinde A, Patel KD. (2022). Heartfulness Meditation: A Yogic and Neuroscientific Perspective. Frontiers in Psychology.
- Kozhevnikov M, et al. (2013). Neurocognitive and Somatic Components of Temperature Increases during g-Tummo Meditation: Legend and Reality. PLOS ONE.
- Zadro S, Stapleton P. (2022). Does Reiki Benefit Mental Health Symptoms Above Placebo? Frontiers in Psychology.
- Huels ER, et al. (2021). Neural Correlates of the Shamanic State of Consciousness. Frontiers in Human Neuroscience.
- Wang RL, Chang RB. (2024). The Coding Logic of Interoception. Annual Review of Physiology.