Yoga nidra is a guided relaxation practice done lying down, with the attention moved systematically through the body while staying awake. Andrew Huberman renamed a version of it "non-sleep deep rest" in 2021, and the term spread faster than the underlying research did. This is a protocol for using yoga nidra specifically to support sleep restriction therapy, the part of CBT-I most people find hardest to stick with.

Yoga Nidra Is the Practice, NSDR Is the Rebrand

Yoga nidra has roots in Indian yogic tradition and has been studied under that name since at least the early 2000s. A 2024 fMRI study notes that recent protocols marketed as NSDR are built on yoga nidra technique, not a separate discovery. The practice itself is simple to describe: lie down, close your eyes, and follow spoken instructions that guide attention through the body, the breath, and a period of stillness, typically over 15 to 30 minutes.

What separates it from a nap is intent. You are not trying to fall asleep. You are practising staying relaxed and aware at the same time, which is also why it does not compete with sleep restriction the way a nap would.

What the Evidence Shows

The best single study is a randomized controlled trial out of AIIMS New Delhi. Datta and colleagues (2021) assigned 41 adults with chronic insomnia to either CBT-I or yoga nidra and tracked them with sleep diaries and polysomnography. Both groups improved on total sleep time, sleep efficiency, and time spent awake after sleep onset. The yoga nidra group also showed a measurable drop in salivary cortisol (p=0.04) and gains in slow-wave sleep. This is one trial with a small sample, not a replacement for CBT-I's evidence base, but it is a real head-to-head comparison, and the result was comparable improvement, not yoga nidra losing out.

A 2026 systematic review pooling six RCTs across 244 participants (Dutta et al.) found consistent gains in sleep onset latency, total sleep time, and sleep efficiency. A separate 2026 meta-analysis (Singh et al.) reached similar conclusions but could only locate five studies specific enough to include in its sleep outcome pooling.

A feasibility trial adds a detail worth knowing before you start: Sharpe and colleagues (2023) found that 89% of participants with self-reported insomnia fell asleep at some point during a guided yoga nidra session, and the practice did not increase alpha EEG power compared to simply lying quietly. Respiratory rate dropped by 1.4 breaths per minute during the practice, a measured difference from the control condition. In plain terms, most people in that study did not stay in the wakeful, aware state the practice describes, and that is what happened in a lab, not a failure on the participant's part.

Why This Supports Sleep Restriction, Not the Opposite

Sleep restriction is the part of CBT-I that trims time in bed to rebuild sleep drive, and it works, but the side effect is daytime sleepiness in the first one to two weeks. Steinmetz and colleagues (2023) identify this fatigue as one of the main reasons patients disengage from sleep restriction before it has had time to work. That is the adherence problem yoga nidra is useful for, not a competing claim on your sleep drive.

A short yoga nidra session gives you a way to recover daytime alertness without lying in bed for an extended period or napping in a way that pulls sleep pressure out of the night. Used this way, on a couch or the floor, outside your prescribed sleep window, it is a tool for getting through the hard early stretch of restriction, not a workaround for it.

The Protocol

1. Setup and Posture

Find a quiet space away from your primary workspace, a couch, the floor, or a recliner. Lie flat on your back with legs uncrossed and arms resting at your sides, palms up. If lying flat strains your lower back, bend your knees with feet flat on the floor. Dim the lights or use an eye mask, and keep a blanket nearby since heart rate and body temperature both drop as you relax.

2. The Breathing Anchor

Begin with three cycles of a technique sometimes called the physiological sigh: two quick inhales through the nose, the second a short top-off on top of the first, followed by one long, slow exhale through relaxed lips. Balban and colleagues (2023) found that exhale-focused breathing like this reduced respiratory rate and improved mood more than an equivalent period of mindfulness meditation, tested across a month of daily 5-minute sessions. After the three cycles, shift to regular nasal breathing with a slightly longer exhale than inhale, for example a 4-second inhale and 6-second exhale.

3. The Body Scan

1. Bring attention to your right foot. Notice the heel against the floor, the sole, the toes, without moving them.
2. Move attention slowly up the right side: ankle, calf, knee, thigh, hip.
3. Repeat on the left side: foot, ankle, calf, knee, thigh, hip.
4. Continue through the pelvis, abdomen, chest, back, hands, arms, shoulders, neck, face, and jaw.
5. Unclench the jaw, soften the muscles around the eyes, and let the tongue rest away from the roof of the mouth.

4. Settling

Bring attention to the whole body resting as one unit. Let it feel heavier with each exhale. If a thought or worry surfaces, treat it as background noise rather than something to argue with, and return attention to the breath leaving the body. This is the part of the practice most people find hardest, and it is also the part where falling asleep, per the Sharpe trial above, is common rather than a sign you are doing it wrong.

5. Re-Entry

Wiggle fingers and toes to bring movement back. Open your eyes slowly and let your gaze soften across the room without focusing on any one object. Sit up slowly, pause for 30 seconds, and return to your day without rushing.

Troubleshooting

My mind raced the entire time

Normal, especially early on. The skill is not preventing thoughts, it is noticing the mind has wandered and returning attention to the body or breath. That repeated act of returning is the practice.

I fell asleep

Also normal. In the Sharpe trial, most participants did. If you are practising close to a nap-length window and worried about pulling sleep pressure out of your night, set a soft alarm for 20 minutes before you start.

Where do I find a script or recording

You do not need to memorize the steps above. Guided yoga nidra recordings are widely available on platforms like YouTube, Spotify, and Insight Timer under either "yoga nidra" or "NSDR," and following an external voice makes it easier to disengage from your own racing thoughts than reading a script silently.

Yoga nidra is not a replacement for CBT-I, and it is not the same claim as CBT-I versus sleeping pills. It is a supporting practice for the hardest week or two of sleep restriction, and for the general hyperarousal that shows up in ACT for insomnia work and in patients who describe waking at 3 a.m. unable to settle their mind. If your relationship to rest itself has become anxious, that overlaps with the work described in sleep mindset.