Why You Can’t Sleep — and How Yoga Can Help
Poor sleep is often caused by a nervous system that cannot downshift from the stress response. Yoga supports better sleep by activating the parasympathetic nervous system through breath regulation, gentle movement, and practices like yoga nidra — a guided relaxation technique shown in research to reduce cortisol and improve sleep quality.
Why is it that the mind decides that 3 am is the perfect time to process every unresolved problem, every uncomfortable feeling, and every to-do list item for the next six months?
If you have experienced this, you are not alone — and you are also not doing anything wrong. The difficulty most people have with sleep is not a discipline problem. It is a nervous system problem.
Why the Nervous System Stays “On” at Night
The autonomic nervous system has two primary branches. The sympathetic branch prepares us for action — the “fight or flight” response. The parasympathetic branch supports rest, recovery, and digestion — the “rest and digest” system. For sleep to come naturally and restoratively, the parasympathetic branch needs to become dominant.
But for many people living with chronic stress, anxiety, or the residue of past difficulty, the sympathetic branch stays activated well into the evening and night. The body is still in a low-grade state of readiness. Cortisol — the primary stress hormone — remains elevated. The mind, trained to scan for threat, keeps working even when there is nothing urgent to address.
Sleep hygiene advice — turning off screens, keeping a consistent schedule, avoiding caffeine — can be genuinely helpful. But if the nervous system has not been given a signal of safety, those habits alone often are not enough to bridge the gap between wakefulness and rest.
The Difference Between Being Tired and Being Regulated
This is a distinction that matters more than it might seem.
Many people with sleep difficulties are exhausted. They are often desperately tired. But tiredness and nervous system regulation are not the same thing. The nervous system can keep the body in a state of activation even when the body is physically depleted — which is why people with anxiety or burnout often describe lying awake despite feeling completely worn out.
Regulation — the nervous system’s capacity to shift between states of activation and rest — is a skill that develops over time. Yoga practices support this development by giving the nervous system repeated experiences of safety and rest, gradually building the capacity to downshift more readily.
Yoga Nidra: The Practice Most Worth Knowing About
Yoga Nidra, sometimes called “yogic sleep” and “non-sleep deep rest,” is a guided relaxation practice that brings the body and mind into a state between waking and sleep — a deeply restorative state that is distinct from both.
Research has shown that Yoga Nidra reduces cortisol levels, increases parasympathetic nervous system activity, and improves sleep quality. A 2018 study found that yoga nidra was more effective at reducing anxiety than seated meditation. It has been shown to support people with insomnia, chronic stress, and trauma.
It is also, in practice, one of the most accessible yoga practices available. You lie down. You listen to a guided practice. You do not need to try to relax — the practice works even when the mind wanders, and even when you fall asleep. The invitation is simply to remain present to the guidance for as long as you can.
20–40 minutes of yoga nidra in the evening or at bedtime can meaningfully support the transition from the alertness of the day toward the rest the body needs.
Five Yoga Practices for Better Sleep
1. Extended exhale breathing before bed
A slow exhale — longer than the inhale — directly stimulates the vagus nerve and activates the parasympathetic nervous system. Try inhaling for 4 counts and exhaling for 6–8 counts, for 5–10 rounds, lying in bed before sleep.
2. Supported restorative pose
Lying with the legs up the wall (viparita karani), or in supported child’s pose with a bolster or folded blanket, creates physical conditions for parasympathetic activation — a lowered centre of gravity, reduced muscular effort, and a gentle invitation toward stillness. Hold for 5–10 minutes.
3. Yoga nidra practice
Use a guided yoga nidra recording of 20–40 minutes in the evening. This is most effective when practiced at a consistent time, lying down in a quiet space. It can be practiced in bed — if you fall asleep during the practice, that is perfectly fine.
4. Body scan to release held tension
Moving awareness slowly through the body — from the soles of the feet to the top of the head — allows the mind to settle onto something concrete and present, and often reveals areas of held tension that can soften when they are noticed. This is different from trying to relax: the aim is awareness, not effort.
5. Brief gentle movement in the evening
A short, slow sequence of movement in the early evening — cat-cow, gentle twists, forward folds — gives the nervous system a physical opportunity to transition from the activation of the day toward the quieter tone that supports sleep. Even 10–15 minutes can make a noticeable difference.
A Note on Patience
Nervous system patterns take time to shift. If you have been living with disrupted sleep for months or years, a single night of yoga practice will not resolve it. What these practices offer is a cumulative effect: each session gives the nervous system another experience of safety and rest, gradually building the capacity for more consistent, deeper sleep.
If your sleep difficulties are long-standing, severe, or accompanied by significant anxiety or depression, working with a qualified professional — whether a yoga therapist, therapist, or GP — is worth considering alongside these practices.
FAQs For Improving Sleep by Regulating Your Nervous System
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Yes. Yoga Nidra is a gentle, non-effortful practice that is well-tolerated by most people and can be practiced daily. Some people find it most useful in the evenings; others practice in the afternoon for a restorative rest. There is no “too much” yoga nidra.
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Falling asleep during yoga nidra is common, particularly for people who are sleep-deprived. The practice is still beneficial — the nervous system continues to process the guidance even when conscious awareness fades. Over time, as sleep debt reduces, many people find they stay more awake during the practice.
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Yes — yoga can be particularly supportive for anxiety-related insomnia because it works directly with the nervous system rather than relying only on behavioural strategies. Breath practices, yoga nidra, and gentle movement all support parasympathetic activation, which addresses one of the core physiological drivers of anxiety-related sleep difficulties.
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Some people notice improvement within a week of consistent practice. Research on yoga and insomnia typically looks at 8-week programmes, with meaningful improvements in sleep quality, sleep onset, and nighttime waking reported across multiple studies. The key is consistency rather than intensity.
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For sleep specifically, an evening practice — particularly yoga nidra or a gentle restorative sequence — is most directly supportive, as it gives the nervous system a transition period between the activity of the day and sleep. A morning practice may also be helpful for overall nervous system regulation and stress resilience, which indirectly supports sleep.
