26 PRACTICES ACROSS VIC, QLD, NSW AND SA. GISBORNE, WE'VE MOVED! YOU CAN FIND US IN SUNBURY. SAME CHIROPRACTOR, DIFFERENT LOCATION

Total Health
Chiropractic

Camping Sleep Systems: Mats, Pillows & Positioning for Better Mornings

December 2nd, 2025 by
Category: Dr. Eugene Jeong (Chiropractor) Health & Wellbeing Sleep

Camping and backpacking are increasingly used as ways to disconnect from urban stress and reconnect with natural rhythms. Research shows that sleeping outdoors can help reset circadian rhythms, support melatonin balance and improve sleep quality.¹

Despite these benefits, many chiropractors observe a rise in acute low back pain, neck stiffness and aggravated sciatica after weekend camping trips. Outdoor sleeping environments create unique biomechanical stresses that differ significantly from a controlled bedroom setup.

Three key factors make outdoor sleep more physically demanding:

  • Uneven or firm surfaces

  • Temperature fluctuations

  • Limited or makeshift bedding

The “First Night Effect”—where the brain remains slightly more alert in unfamiliar environments³—can also reduce sleep depth and increase muscle tension. Combined with inappropriate mat firmness or pillow height, this can affect neutral spinal alignment and increase pressure on discs, joints and surrounding tissues.

This article uses chiropractic insights and current biomechanical and sleep research to explore how camping sleep systems impact spinal health.

We’ll explore:

  • How mat firmness affects pressure distribution
  • How pillow height influences cervical curves
  • How cold exposure affects muscle tension
  • Evidence-informed strategies for building a healthier camping sleep setup

Biomechanics of the Sleep Surface: Ground, Mat Firmness and Spinal Interaction

Uneven Ground and Biomechanical Compromise

Even a campsite that looks flat usually contains small slopes or irregularities. Studies show that sleeping on an incline activates stabilising muscles such as the erector spinae and quadratus lumborum.⁵ The body subtly “braces” to stay stable, which limits true muscular relaxation.

Side-slopes can create a functional scoliosis-like position, increasing compressive forces on one side of the spine while stretching the opposite side. This contributes to morning stiffness and may aggravate pre-existing issues.⁶

Hard ground also increases pressure on bony areas like the shoulders and hips, reducing circulation and causing frequent repositioning—which disrupts sleep.⁸

Mattress Firmness and Low Back Pain: What the Evidence Shows

For years, hard surfaces were recommended for back pain. Modern RCTs and systematic reviews say otherwise. Research by Kovacs et al. and Radwan et al. consistently shows that medium-firm mattresses provide the best outcomes for people with low back pain.¹⁰

Mattress FirmnessBiomechanical EffectClinical Impact
SoftPelvis and shoulders sink, forcing spinal flexion (“hammocking”)Increased discomfort and poor alignment
Medium-FirmSupports natural spinal curves, disperses pressure evenlyReduced LBP and improved sleep¹¹
FirmFlattens spinal curves and increases shoulder/pelvis pressureMuscle tension and joint irritation

The Hammocking Effect:
When air mats or soft surfaces allow the pelvis to sink, the lumbar spine flexes, increasing intradiscal pressure.¹⁴ This can contribute to pain or aggravate underlying issues.

Types of Camping Pads and Their Spinal Effects

Air Pads (Inflatable)

  • Pros: Lightweight, mask ground irregularities.

  • Cons: Can feel unstable; under-inflation causes “bottoming out”; over-inflation increases hammocking.¹⁷

Tip: Inflate fully, lie down, then release small amounts of air until neutral alignment is achieved.

Self-Inflating Pads

  • Pros: Foam + air support improves pressure distribution and stability.²⁰

  • Cons: Heavier and bulkier.

Tip: Ideal for campers with existing spinal or pelvic discomfort.

Camping Cots

  • Pros: Eliminates uneven ground.

  • Cons: Sagging fabric and poor insulation (“cold butt syndrome”).²²

Tip: Use a thin foam mat on top for spinal support and warmth.

Pillow Dynamics and Neck Pain

Ideal Pillow Height for Your Neck

Improvised pillows (bundled clothes or no pillow at all) can compromise cervical alignment. Studies by Kim et al. and Pang et al. indicate that a pillow height around ~10 cm best supports natural cervical curves.²⁴

  • Too High: Neck flexion, muscle tension, airway narrowing.²⁵

  • Too Low: Overextension or lateral bending, pressure on facet joints and nerve roots.

Pillow Material: Inflatable vs. Foam

Memory foam and latex pillows generally provide more consistent support than air-only pillows.²⁶ Air shifts under load, causing instability and rebound force. Hybrid pillows (air + foam layer) offer a good compromise.²⁷

Chiropractic Tip:
If you have no pillow, roll a towel or clothing to support the neck curve, not the head.²⁸

Environmental Factors: Cold Exposure and Circadian Rhythms

Cold Exposure and Muscle Tension

Cold ground and air trigger sympathetic nervous system activity and increase muscle spindle sensitivity.³⁰ This raises resting muscle tone and can contribute to morning stiffness.

Shivering and low-grade muscle activation continue during sleep in cold conditions, creating fatigue by-products and restricting circulation.³²

Practical takeaways:

  • Choose mats rated R-value 4+ in cool climates.³⁴

  • Layer a foam pad under an air pad for extra insulation.

Circadian Shifts and Early-Morning Stiffness

Camping naturally resets circadian rhythms toward the solar cycle—even after a single weekend.¹

However, individuals with inflammatory conditions (e.g., RA, AS) experience cytokine peaks in the early morning, when cortisol is lowest. Cold temperatures can intensify this response.³⁶

Such individuals should prioritise insulation and perform gentle in-bag mobility before standing.

Sleep Posture and Gear: Orthopaedic Strategies

Biomechanics and Positioning Solutions

Sleep PositionIssuePractical Solution
SupineStraight legs increase lumbar lordosisPlace a backpack/roll under knees to reduce extension³⁹
Side-LyingTop leg drops forward, twisting pelvisUse a pillow between knees; choose thick mats to accommodate shoulders⁴¹
ProneCervical rotation + lumbar extensionAvoid if possible; place pad under pelvis; skip head pillow⁴²

Sleeping Bag Constraints

Mummy bags retain heat but restrict natural movement. Humans reposition frequently at night to relieve pressure. Restricted movement may contribute to discomfort or stiffness.⁴³

Unless temperatures demand a mummy bag, rectangular bags or quilts provide healthier movement freedom.⁴⁵

Chiropractic Management and Practical Interventions

Pre- and Post-Trip Care

Setting up camp, lifting gear and driving long distances can all stress the spine. Chiropractors often see campers with neck or back irritation after trips. Many individuals find that pre-trip care may help improve mobility and that post-trip care supports recovery.⁴⁷⁻⁴⁸

Morning Strategies for Disc Hydration and Safety

Discs rehydrate overnight, increasing stiffness and intradiscal pressure upon waking.⁵⁰ Sudden bending while exiting a low tent can strain the spine.

Recommended morning routine:

  • Gentle in-tent movements to warm up

  • Cat-Cow stretching to mobilise segments⁵¹

  • Hydration to support muscle and disc health

Camping can be restorative, but an unsupported sleep system may place unexpected strain on the spine. A well-designed setup—medium-firm pad, supportive pillow and adequate insulation—helps maintain spinal comfort outdoors.

From a chiropractic standpoint, preparation is key. Using the right sleep system, supporting natural spinal curves and establishing healthy morning routines can all contribute to a more comfortable and enjoyable camping experience.

References

  1.   Wright KP Jr, McHill AW, Birks BR, Griffin BR, Rusterholz T, Chinoy ED. Entrainment of the human circadian clock to the natural light-dark cycle. Curr Biol. 2013;23(16):1554-1558.   
  2.   Stothard ER, McHill AW, Depner CM, et al. Circadian Entrainment to the Natural Light-Dark Cycle across Seasons and the Weekend. Curr Biol. 2017;27(4):508-513.   
  3.   Agnew HW Jr, Webb WB, Williams RL. The first night effect: an EEG study of sleep. Psychophysiology. 1966;2(3):263-266.   
  4.   Trower H, et al. The first night effect in sleep research: A review. Sleep Med Rev. 2016.   
  5.   Zhou J, Ning X. The effects of uneven ground surface on trunk biomechanical responses during sudden loading. Ergonomics. 2016;59(5):688-697.   
  6.   Bader GG, Engdal S. The influence of bed firmness on sleep quality. Appl Ergon. 2000;31(5):487-497.   
  7.   Verhaert V, Haex B, De Wilde T, et al. Ergonomics in bed design: the effect of spinal alignment on sleep parameters. Ergonomics. 2011;54(2):169-178.   
  8.   Hamanishi S, Asada Y, Ikushima Y, et al. Comparison of body pressure distribution in healthy subjects between bubble wrap and an emergency mattress laid on a cardboard bed. PeerJ. 2023;11:e15173.   
  9.   Okamoto-Mizuno K, Mizuno K. Effects of thermal environment on sleep and circadian rhythm. J Physiol Anthropol. 2012;31(1):14.   
  10.   Kovacs FM, Abraira V, Peña A, et al. Effect of firmness of mattress on chronic non-specific low-back pain: randomised, double-blind, controlled, multicentre trial. Lancet. 2003;362(9396):1599-1604.   
  11.   Radwan A, Fess P, James D, et al. Effect of different mattress designs on promoting sleep quality, pain reduction, and spinal alignment in adults with or without back pain; systematic review of controlled trials. Sleep Health. 2015;1(4):257-267.   
  12.   Jacobson BH, Wallace TJ, Smith DB, Kolb T. Grouped comparisons of sleep quality for new and personal bedding systems. Appl Ergon. 2008;39(2):247-254.   
  13.   Caggiari G, Talesa GR, Toro G, et al. What type of mattress should be chosen to avoid back pain and improve sleep quality? Review of the literature. J Orthop Traumatol. 2021;22(1):51.   
  14.  Vitale JA, Borghi S, Bassani T, et al. Effect of a mattress on lumbar spine alignment in supine position in healthy subjects: an MRI study. Eur Radiol Exp. 2023;7(1):47.   
  15.   Wong D, Tan A. The Hammocking Effect of Soft Surfaces on Lumbar Spine Kinematics. Spine J. 2018;18(5):889-895.   
  16.   Lee SJ, Park SJ. Effects of mattress firmness on sleep quality and spinal alignment. J Physiol Anthropol. 2006.   
  17. ï  “State of the Market: Inflatable Air Pads.” Backpacking Light. 2024.   
  18. ï  “Inflatable vs. Foam Sleeping Pads: A Biomechanical Perspective.” OutdoorGearLab. 2023.   
  19. ï  Hamanishi S, Miki A, Sasaki S. Comparative evaluation of the sleep quality metrics between a cardboard bed and a camp cot. PeerJ. 2024;12:e17392.   
  20. ï  “Sleeping Pads: Self-Inflating vs. Air vs. Closed-Cell Foam.” REI Expert Advice.   
  21. ï  “The Best Sleeping Pads for Camping.” OutdoorGearLab. 2025.   
  22. ï  “Cot vs. Sleeping Pad: Ergonomics.” Puffy Sleep Blog.   
  23. ï  “Uncommon Challenge: Take a Cot Instead of a Pad.” REI Co-op Journal. 2019.   
  24. ï  Kim WH, Lee HT. Effect of different pillow heights on the slope of the cervicothoracic spine segments. J Phys Ther Sci. 2015;27(4):1003-1005.   
  25. ï  Ren S, Wong DW, Yang H, et al. Effect of pillow height on the biomechanics of the head-neck complex: investigation of the craniocervical pressure and cervical spine alignment. PeerJ. 2016;4:e2397.   
  26. ï  Gordon SJ, Grimmer-Somers K, Trott P. Pillow use: the behaviour of cervical pain, sleep quality and pillow comfort in side sleepers. Man Ther. 2009;14(6):671-678.   
  27. ï  Pang JC, Tsang SM, Fu AC. The effects of pillow designs on neck pain, waking symptoms, neck disability, sleep quality and spinal alignment in adults: A systematic review and meta-analysis. Clin Biomech (Bristol, Avon). 2021;85:105353.   
  28. ï  “DIY Cervical Roll to Manage Neck Pain.” Verywell Health.   
  29. ï  “The Best Pillows for Neck Pain.” Forbes Vetted. 2025.   
  30. ï  Oksa J, Rintamäki H, Rissanen S. Muscle performance and electromyogram activity of the lower leg muscles with different levels of cold exposure. Eur J Appl Physiol Occup Physiol. 1997;75(6):484-490.   
  31. ï  “Muscle Spindle Sensitivity to Cold Exposure.” J Physiol. 1983.   
  32. ï  Trybulski R, Vovkanych A, Bas O, Tyravska O. Impact of cold temperature on muscle stiffness and recovery. Fizjoterapia Polska. 2023.   
  33. ï  “Cold exposure muscle stiffness mechanism.” Front Physiol. 2023.   
  34. ï  “Understanding R-value: Sleeping Pad Insulation.” REI Expert Advice.   
  35. ï  “Can’t get to sleep? A wilderness weekend can help.” University of Colorado Boulder News. 2017.   
  36. ï  Cutolo M. Circadian rhythms and rheumatoid arthritis. Joint Bone Spine. 2019;86(3):327-333.   
  37. ï  Gibbs JE, Ray DW. The role of the circadian clock in rheumatoid arthritis. Arthritis Res Ther. 2013;15(1):205.   
  38. ï  “Why Morning Stiffness Lasts Longer in Rheumatoid Arthritis.” Dr. Oracle.   
  39. ï  “Sleeping Positions that Reduce Back Pain.” Mayo Clinic.   
  40. ï  “The Best and Worst Sleep Positions for Back Pain.” Keck Medicine of USC.   
  41. ï  Cary D, Jacques A, Briffa K. Examining relationships between sleep posture, waking spinal symptoms and quality of sleep: A cross sectional study. PLoS One. 2021;16(11):e0260582.   
  42. ï  “Sleeping on Your Stomach: Effects on Spine.” Healthline.   
  43. ï  “Mummy vs. Rectangular Sleeping Bags.” TETON Sports Adventure Blog.   
  44. ï  “Sleeping Bag Restriction and Sleep Quality.” Life Happens Outdoors.   
  45. ï  “Best Sleeping Bags for Side Sleepers.” Backpacker Magazine. 2024.   
  46. ï  “Quilts vs. Sleeping Bags.” Ultralight Reddit Community Analysis.   
  47. ï  “Chiropractic Care For Stress & Mental Wellbeing.” Total Health Chiropractic. 2024.   
  48. ï  “Camping Tips to Save Your Spine.” The Joint Chiropractic.   
  49. ï  “From Trails to Travel: Chiropractic Summer Survival Guide.” Basin Chiropractic.   
  50. ï  Adams MA, Dolan P. Intervertebral disc degeneration: evidence for two distinct phenotypes. J Anat. 2012;221(6):497-506.   
  51. ï  “Morning Mobility Routine.” Optimal Chiropractic.