Yoga Nidra and your Nervous System

Yoga Nidra, meaning Yogic Sleep is a guided meditative exploration of consciousness itself. It’s deeply profound, and profoundly relaxing. Many modern studies are showing the science of how it works. Yoga Nidra has wide spectrum benefits for overall health through accessing the subconscious processes and regulation of the nervous system. 

The practise engages multiple brain systems and neuro-physiological pathways, supporting relaxation, stress reduction, emotional regulation, and self-awareness. Your body and brain are not really two things, it’s not like you can have one without the other. The nervous system is the interface through which these seemingly separate experiences of self interact . Its how we perceive and respond the world around us. 

The brain is not a computer in your head and your body is not a machine made up of parts. Yoga Nidra is an invitation to step out of what you think and experience the power of your mind directly.

You are a living breathing evolving manifestation of Life Itself. The practise of Yoga Nidra is a guided process to sense this for yourself, from the inside. This ancient Technology is designed to manage Stress responses. As I research the science of rewiring your nervous system I’m astounded to find it all embedded in the technique. 

The 7 stages of Yoga Nidra and your nervous system

1. Settling and Listening

• Description: This is where you settle the body, make it feel safe and Supported. Next you tune in to the senses of Listening and feeling.
• Neuroscience: Feeling safe is primary in allowing our overstimulated Nervous system to calm down and switch in a relaxation Response. Focusing on two senses decreases the load of our brains sensory processing. This creates inner space that we can direct to our inner investigations to the nature of consciousness. 

2. Relaxation

• Description: This is where you consciously relax the Body and Mind. Releasing holding patterns consciously invites the rest and Digest aspects of the Nervous system online.
• Neuroscience:  Creates the physiological opposite of the stress response. Breathing, heart-rate, and blood pressure all slow down. Long-term effects include better concentration, energy levels and self-esteem. 

3. Sankalpa

• Description: This is where you set a personal intention or goal (called a Sankalpa). This is a positive present tense I statement to create the experience you desire. 
• Neuroscience: Setting an intention activates the prefrontal cortex (PFC), which is responsible for planning, motivation, and goal-setting. The PFC has a role in reinforcing positive neural pathways associated with intention. Repeatedly focusing on an intention can help “prime” the brain, creating new, positive neural connections through neuroplasticity.

4. Body Scan

• Description: Awareness is guided through different body parts to bring attention to physical sensations. Feeling sensations in each part helps the practitioner tune into their body.
• Neuroscience: The body scan engages the somatosensory cortex, which maps the body’s sensations. This process shifts focus away from cognitive “thinking” areas and activates the parasympathetic nervous system (PNS). This promotes relaxation and counteracts the stress response by lowering heart rate, reducing cortisol levels, and easing muscle tension.

5. Breath and Energy Awareness

• Description: You bring attention to your breathing, often by observing the natural flow of breath without altering it. Tuning into the natural breath allows the body’s energy to flow freely.
• Neuroscience: Breath awareness regulates the autonomic nervous system (ANS), enhancing parasympathetic tone. This stage activates the insula, a brain area involved in interoception (internal bodily awareness), and modulates the amygdala, reducing fear and stress responses.

6. Emotional Awareness

• Description: Practitioners are guided to recall specific contrasting emotions. Exploring how to observe and experience contrasting emotions without becoming attached to them.
• Neuroscience: Accessing emotional memories activates the amygdala and hippocampus, areas critical for emotion processing and memory. Observing these emotions in a detached way helps desensitize emotional triggers, allowing the prefrontal cortex to regulate emotional responses more effectively. This stage helps to establish new emotional responses and facilitates emotional resilience.

7. Visualization

• Description: You visualize specific images, symbols, or guided mental imagery to evoke a calm state of mind.
• Neuroscience: Visualization activates the occipital cortex (visual processing) and the default mode network (DMN), which is involved in imagination and mind-wandering. This can lead to altered states of consciousness that can reduce rumination and promote a state of rest. It can also stimulate the limbic system, fostering creativity and emotional release.

Overall Neurophysiological Impact

Yoga Nidra encourages neuroplasticity—the brain’s ability to rewire itself. Regular practice can reduce the size and activity of the amygdala (often overactive in chronic stress), increase gray matter in the hippocampus .(supporting memory and emotional regulation). It strengthens connections in the prefrontal cortex(enhancing focus and executive functioning). And, the deep relaxation state achieved reduces the sympathetic nervous system’s dominance (fight-or-flight response). This increases the parasympathetic nervous system’s influence, enhancing rest and recovery.

The overall impact of Yoga Nidra on the brain can help achieve deep rest, support emotional regulation, and foster new, healthier thought patterns.