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What Is NSDR? A Guide to Non-Sleep Deep Rest

NSDR means non-sleep deep rest: guided practices that settle you deeply while you stay aware. You listen to a voice, follow sensations and breathing, and let attention soften. Yoga nidra is the best-known approach within it. Studies link it with a calmer nervous system, sharper responses after ten minutes and deeper sleep.

By Yonida editorial ·

What happens in a practice?

Andrew Huberman popularised the NSDR name as an accessible way to talk about guided rest. A practice commonly includes a comfortable still position, attention moving through the body and guidance around breathing. You do not need yoga experience or a perfect meditation technique to begin.

The aim is to follow rather than perform. Thoughts may come and go. Some listeners remain aware of the voice; others drift towards sleep. The actual recording matters: its length, language, pacing and ending tell you more than a category label alone.

Sources: Huberman Lab — Guide to Non-Sleep Deep Rest

A simple way to try NSDR

Choose a safe place where you can stop paying attention to surrounding demands. Set your audio at a comfortable volume before starting. You can rest in a position that works for you; the practice should not require discomfort to count.

Huberman's guide provides free 10-, 20- and 30-minute recordings, and links to other practitioners. This page is an explanation, not a playable Yonida session. Those existing recordings let you try guided rest today and learn which voice and structure you prefer.

  • Choose daytime return or bedtime wind-down.
  • Pick a running time that fits, with space either side.
  • Reduce interruptions and settle comfortably.
  • Follow the voice gently; return when attention wanders.
  • Afterwards, notice whether you would choose that practice again.

Sources: Huberman Lab — Guide to Non-Sleep Deep Rest

What deep rest is known for

Huberman's case for NSDR rests on a handful of effects, and each has research behind it. Long out-breaths and attention moving through the body shift the nervous system towards rest: in a randomised trial of 20 adults, a yoga nidra session slowed the heart and shifted heart rate variability towards rest. From there, energy and focus come back: in a randomised trial of 65 active adults, ten minutes of NSDR left people faster and more accurate than ten minutes of sitting.

Two findings from the brain are worth knowing. In a PET study of eight experienced teachers, dopamine release rose by an estimated 65% during yoga nidra. And rest after practice helps the brain keep what it has just learned: people who rested in yoga nidra after training on a new skill held on to it better, and brain recordings show new skills being replayed during short waking rests.

Deep rest helps at night too. In a randomised trial of 41 adults with chronic insomnia, yoga nidra increased deep sleep, cut the time spent awake in the night and lowered cortisol, and a 2026 review of 73 studies linked practice with less stress, anxiety and low mood. Huberman also recommends NSDR to recover after a short night. None of this makes rest a replacement for sleep.

Sources: Markil et al. (2012) — Yoga Nidra and Heart Rate Variability: Randomised TrialBoukhris et al. (2024) — Ten Minutes of NSDR and Performance: Randomised TrialKjær et al. (2002) — Dopamine Release During Yoga Nidra: PET StudyImmink (2016) — Yoga Nidra After Training and Motor MemoryBuch et al. (2021) — Skill Consolidation and Replay During Waking RestDatta et al. (2021) — Yoga Nidra in Chronic Insomnia: Randomised TrialGhai et al. (2026) — Yoga Nidra, Stress, Anxiety and Depression: Systematic ReviewHuberman Lab — Guide to Non-Sleep Deep Rest

The next step is finding your fit

If a recording feels right, it is fine to return to it. If you keep wishing the words, sound or duration were different, those preferences are worth taking seriously. A personal intention can also connect the practice to a value or belief you want to bring into daily life.

Yonida is coming to iPhone with guided practices shaped around those choices. You can join the waitlist for an invitation while continuing to use free NSDR recordings. Never practise while driving or operating machinery, and do not use rest to replace sleep or professional care.

Sources and further reading