Free Relaxation Resources

The evidence is in.
The tools are in your hands.
The person in your mirror is waiting.

A Reader Companion to 30 Minutes to Longevity

In Presence, Purpose, and Recovery the case is made that chronic stress is not merely an inconvenience but a direct driver of biological ageing. It shortens telomeres, elevates inflammatory cytokines, dysregulates the HPA axis, and measurably accelerates epigenetic ageing. The good news is that the most effective interventions are free, require no equipment, and take as little as five minutes.

The resources below are organised by the technique covered in each chapter: yoga nidra and non-sleep deep rest (NSDR), calming soundscapes, and breathing protocols. At the time of writing, every resource listed is completely free.

Yoga Nidra and Non-Sleep Deep Rest (NSDR)

The neuroscience of the rest state — the parasympathetic shift from fight-or-flight to rest-and-digest. Deliberately inducing this state has measurable effects on mood, anxiety, and biological age markers. Yoga nidra (‘yogic sleep’) is one of the most potent tools for this. Andrew Huberman of Stanford rebranded it as Non-Sleep Deep Rest (NSDR) to make it accessible to readers who might be put off by the spiritual framing. Both guide the brain into alpha and theta wave states that facilitate memory consolidation, stress hormone clearance, and nervous system recovery.

Yoga Nidra

We recommend 10–20 minutes in the afternoon or before sleep. The resources below require nothing more than a quiet space and a device.

NSDR — Non-Sleep Deep Rest

For readers who prefer a secular, neuroscience-framed version of the same practice, Andrew Huberman’s NSDR recordings on YouTube are zero-cost and peer-credible. Huberman uses NSDR daily in the afternoon between work blocks, and to return to sleep if woken at night. His research at Stanford has explored NSDR’s role in neuroplasticity and learning consolidation.

---

Calming Sounds and Soundscapes

In the book I cover sleep architecture and the specific pre-sleep practices that protect slow-wave and REM sleep. Auditory environment is one of the most accessible levers. Research from the University of Sussex found that nature sounds physically alter autonomic nervous system activity. The sounds promote parasympathetic (rest-digest) dominance over sympathetic (fight-flight) independently of any active relaxation practice. In other words, playing rain or forest sounds while reading, working, or lying in bed has measurable physiological effects, not just subjective ones.

The resources below are free, ad-light or ad-free, and range from simple ambient loops to fully customisable soundscape generators.

---

Meditation Apps

Consistent daily practice is recommended over intensity or duration — five minutes done every day outperforms sixty minutes done occasionally. These apps make daily practice easier by removing friction. All of the below have substantial free tiers; none require payment to begin a meaningful practice

---

Cyclic Sighing — The Five-Minute Evidence-Based Protocol

We have previously covered the Balban et al. (2023) Stanford RCT in detail. This randomised controlled trial compared five daily relaxation modalities including four breathwork techniques and guided mindfulness meditation over a month. Cyclic sighing outperformed all others for real-time mood improvement and anxiety reduction. It requires no app, no equipment, and no prior practice. It can be done in a car, a break room, or a hospital corridor.

When to use

Any time: pre-sleep, between shifts, after a difficult interaction, during a break. The return is immediate: lower heart rate, reduced cortisol, a nervous system shifted toward the biological state of recovery. 5 minutes is sufficient for measurable effect.

How to perform

Step 1	Double inhale	Take a full inhale through the nose. At the top of the breath, take one more short sniff to fully inflate the lungs. This reinflates collapsed alveoli and maximises gas exchange.
Step 2	Long exhale	Exhale slowly and completely through your mouth Continue this long, controlled exhale until the lungs are empty.
Step 3	Repeat	Repeat continuously for 5 minutes. There is no need to count or time individual breaths. Focus is on the exhale being longer than the inhale.

The Evidence

---

Quick Reference — Which Resource for Which Situation

Situation	Recommended Resource
5 minutes before sleep	Cyclic sighing → then Lizzy Hill yoga nidra
Post-shift recovery (10–20 min)	Huberman NSDR 10 or 20 min
Background sound while working or reading	myNoise.net (customised)
Pre-sleep audio environment	Calmsound.com ocean recording
Building a daily habit — app	Insight Timer (free library)
Patient to recommend — institutional credibility	UCLA Mindful App
No internet / offline use	Medito app
Exploring many yoga nidra styles	Yoga Nidra Network (600+ free)

The daily thirty minutes is structured as: twenty minutes of movement, five of mindfulness, and five of sleep preparation. The resources in this document speak to the final ten of those thirty minutes. Five minutes of cyclic sighing can be done as a transition from the movement block. Five minutes of myNoise or a sleep-specific yoga nidra can close the day.

None of these practices require purchasing anything. None require a gym membership, a nutritionist, or an app subscription. They are the evidence-based, zero-cost tools that the book argues exist in plain sight — available to anyone willing to give them the time.

---

References

• Balban MY, Neri E, Kogon MM, Weed L, Nouriani B, Jo B, Holl G, Zeitzer JM, Spiegel D, Huberman AD. Brief structured respiration practices enhance mood and reduce physiological arousal. Cell Rep Med. 2023 Jan 17;4(1):100895.
• Basso JC, McHale A, Ende V, Oberlin DJ, Suzuki WA. Brief, daily meditation enhances attention, memory, mood, and emotional regulation in non-experienced meditators. Behav Brain Res. 2019 Jan 1;356:208-220.
• Buckner RL, Andrews-Hanna JR, Schacter DL. The brain’s default network: anatomy, function, and relevance to disease. Ann N Y Acad Sci. 2008 Mar;1124:1-38.
• Burns AC, Saxena R, Vetter C, Phillips AJK, Lane JM, Cain SW. Time spent in outdoor light is associated with mood, sleep, and circadian rhythm-related outcomes: A cross-sectional and longitudinal study in over 400,000 UK Biobank participants. J Affect Disord. 2021 Dec 1;295:347-352.
• Cole SW, Levine ME, Arevalo JM, Ma J, Weir DR, Crimmins EM. Loneliness, eudaimonia, and the human conserved transcriptional response to adversity. Psychoneuroendocrinology. 2015 Dec;62:11-7. 
• Dunbar RI. Neocortex size as a constraint on group size in primates. J Hum Evol. 1992;22(6):469-493.
• Epel ES, Blackburn EH, Lin J, Dhabhar FS, Adler NE, Morrow JD, Cawthon RM. Accelerated telomere shortening in response to life stress. Proc Natl Acad Sci U S A. 2004 Dec 7;101(49):17312-5
• Fredrickson BL, Grewen KM, Coffey KA, Algoe SB, Firestine AM, Arevalo JM, Ma J, Cole SW. A functional genomic perspective on human well-being. Proc Natl Acad Sci U S A. 2013 Aug 13;110(33):13684-9.
• Holt-Lunstad J, Smith TB, Layton JB. Social relationships and mortality risk: a meta-analytic review. PLoS Med. 2010 Jul 27;7(7):e1000316.
• Kim ES, Hagan KA, Grodstein F, DeMeo DL, De Vivo I, Kubzansky LD. Optimism and Cause-Specific Mortality: A Prospective Cohort Study. Am J Epidemiol. 2017 Jan 1;185(1):21-29. 
• Moszeik EN, von Oertzen T, Renner KH. Effectiveness of a short Yoga Nidra meditation on stress, sleep, and well-being in a large and diverse sample. Curr Psychol. 2022;41:5272-5286.
• Office of the Surgeon General (OSG). Our Epidemic of Loneliness and Isolation: The U.S. Surgeon General’s Advisory on the Healing Effects of Social Connection and Community [Internet]. Washington (DC): US Department of Health and Human Services; 2023
• Schernhammer ES, Colditz GA. Suicide rates among physicians: a quantitative and gender assessment (meta-analysis). Am J Psychiatry. 2004 Dec;161(12):2295-302
• Smith PK. 30 Minutes to Longevity. Brisbane; 2026. ISBN 978-1-7645982-0-0.
• Steptoe A, Kivimäki M. Stress and cardiovascular disease. Nat Rev Cardiol. 2012 Apr 3;9(6):360-70.
• Waldinger R, Schulz M. The Good Life: Lessons from the World’s Longest Scientific Study of Happiness. Simon & Schuster; 2023.