Yoga Nidra is often used as a tool for relaxation, better sleep, and stress reduction. But what does science actually say about it? Earlier on my website, I explained in detail what Yoga Nidra is and how a session unfolds. In short, it’s a guided technique that brings you into a state between wakefulness and sleep, allowing deep relaxation. [Read more about it here.]
I’m secretly a bit of a nerd and get excited when something not only feels good but is also backed by evidence. That’s always attracted me more than purely spiritual claims, although I certainly see their value. What originally drew me to yoga was research showing that it can help people with PTSD, sometimes even more effectively than other forms of exercise. If I understand why something works, I’m motivated to try it myself, so it is with Yoga Nidra. In this piece, I highlight a scientific review from 2022 that examined both the origins of Yoga Nidra and its mental and physical effects.
About the research
The review, published in Sleep and Vigilance in 2022, maps out both the origins and clinical effects of Yoga Nidra. You can find the review on PubMed [here]. It’s not a single experiment but an overview of multiple studies. This means no firm conclusions are drawn as in a controlled trial, but it does provide a solid picture of what is currently known about Yoga Nidra. The review addresses both mental and physical effects, and here I summarise the key findings.
Yoga Nidra: Ancient tradition, modern practice
According to the study, Yoga Nidra is based on centuries-old yogic and tantric techniques, but it took its modern form in the 1960s through Swami Satyananda Saraswati. What sets Yoga Nidra apart from other forms of yoga is that the focus is entirely on relaxation, rather than concentration or effort. It is practised lying down; you remain awake and aware while your body deeply relaxes. The researchers describe it as a unique state of consciousness, somewhere between sleep and wakefulness.
What happens in your brain?
One of the most interesting parts of the study focuses on brain activity. Neuroimaging research shows that during Yoga Nidra:
- Dopamine release increases
- Brain areas associated with attention and visualisation are active
- Brainwave patterns change (such as increased theta activity)
This suggests that Yoga Nidra not only feels relaxing but also has measurable effects on the brain.
Effects on stress, anxiety, and mood
A large portion of Yoga Nidra research focuses on its impact on mental health.
Key findings include:
- Regular Yoga Nidra practice significantly reduces stress
- Mild to moderate anxiety and depressive symptoms may decrease with regular practice
- Feelings of well-being and vitality can increase
A key nuance is that while regular Yoga Nidra practice can have positive effects on mental health, these results are not clearly established for severe depression or anxiety disorders. Yoga Nidra can be supportive but is not a replacement for professional help.
Yoga Nidra and sleep
Yoga Nidra occupies that special state between wakefulness and sleep, which makes researchers curious about how it affects sleep quality. Research suggests that Yoga Nidra can help with falling asleep more easily, experiencing deeper sleep stages, and improving subjective sleep quality. Some studies even found reductions in stress hormones such as cortisol (high cortisol levels in the evening can interfere with falling asleep and deep sleep).
Yoga Nidra and physical effects
The review also describes various physiological changes observed, such as lower blood pressure, improvements in blood sugar levels, hormonal balance changes, and potential positive effects on the immune system. Additionally, there are indications that Yoga Nidra influences the autonomic nervous system, allowing the body to more easily enter a restorative state.
How strong is the evidence?
All of these are promising results from regular Yoga Nidra practice. To be fully transparent, the researchers themselves are critical and note several limitations in the studies, including:
- Many studies have small sample sizes
- Not all studies use the same methods
- Sometimes Yoga Nidra is combined with other techniques
- Results are not always consistent
The researchers conclude that the effects of Yoga Nidra are promising and measurable, but more high-quality research is needed. For me, however, it’s convincing enough to give Yoga Nidra a serious try if you’re looking for ways to relax more, sleep better, and increase your overall energy and vitality. Based on this review, we can say:
✔ Yoga Nidra brings the body into a deep state of relaxation
✔ It has measurable effects on the brain and nervous system
✔ It can help with stress, sleep, and overall balance
However, we need to be cautious with claims such as:
✘ That it’s a miracle cure
✘ That it replaces medical treatments
✘ That all effects are the same for everyone
Science only shows one side of the story. The other side is the practitioners’ experience, which is often very clear: they feel calmer and more balanced. Yoga Nidra sits at an interesting intersection between ancient wisdom and modern science. Current research confirms that something real is happening in both body and brain, but we are only beginning to fully understand it. And perhaps it doesn’t need to be completely understood to experience its benefits. 🙂
Want to experience it yourself?
You are welcome to experience a Yoga Nidra session in Curaçao. For example, you can book a private session in a safe and calm setting. Whether you come for relaxation, better sleep, or simply a moment for yourself, you don’t need any prior experience; just lie down and receive.