Insomnia Treatment in Chattanooga: What CBT-I Adds After a Sleep Study
Updated: 8 hours ago
Last reviewed: 09/12/2026
Reviewed by: Dr. Kiesa Kelly
You did the responsible thing. You told your doctor you could not sleep, you were referred for a sleep study, you spent a night wired to sensors, and the report came back essentially normal. Nothing your physician flagged for treatment, no limb movements, sleep architecture within expected limits. And you are still awake at two in the morning doing arithmetic on how many hours are left.
That is disorienting. The test meant to explain things has instead ruled things out, and the advice that follows is usually the sleep hygiene list you already tried. You have been told your sleep is structurally fine, and your experience of it is not. Both can be true, because they answer different questions. This article is about the second one.
In this article, you'll learn:
What a sleep study is designed to detect, and what it is not
Why chronic insomnia is diagnosed from your history rather than a night of monitoring
What keeps insomnia going once it has started, including conditioned arousal
What CBT-I in Chattanooga adds that sleep hygiene advice does not
The specific signs that mean you should go back to sleep medicine instead
Your sleep study came back normal. Now what?
Name what the study was for. Polysomnography measures breathing, oxygen, heart rhythm, leg movements, brain activity and sleep stages across a night — which makes it the right test when sleep-disordered breathing, periodic limb movement disorder or a parasomnia is suspected.
Chronic insomnia is not on that list. The standing American Academy of Sleep Medicine practice parameter states that polysomnography is not recommended for the routine evaluation of chronic insomnia, and is indicated instead when a breathing or limb movement disorder is suspected, when the diagnosis is uncertain, or when treatment has failed [3]; the 2023 European insomnia guideline likewise reserves it for evaluating other suspected sleep disorders and for treatment-resistant insomnia [2]. A normal study is doing its job: it closes doors, which is worth a great deal, and it was never going to open the one you are standing at.
Three assumptions tend to go wrong here.
A normal sleep study means nothing is wrong with your sleep. Insomnia disorder is a clinical diagnosis built from your pattern over weeks and months: how long it takes to fall asleep, how often and how long you wake, and how the following day goes. None of that requires an abnormal recording.
If the study was normal, the problem must be in your head. This assumption does the most damage, and it is wrong in an interesting way. The gap between measured sleep and felt sleep is a well-described feature of chronic insomnia, not a failure of honesty. The leading explanation for it proposes heightened fast brain activity around sleep onset that blurs the boundary between light sleep and wakefulness, so periods you were technically asleep are not laid down as sleep in memory [5]. The mismatch is part of the condition.
The next step is better sleep hygiene. Sleep hygiene is reasonable general advice and a poor treatment. A network meta-analysis of 241 randomized trials covering more than 31,000 people found sleep hygiene education alone had essentially no association with improvement, and relaxation on its own performed worse than nothing; the best-performing combination paired sleep restriction and stimulus control with cognitive methods, at a number needed to treat of about three [8]. If you tried the habits list and it did not help, that is the expected result.
One more thing: apnea and insomnia are not mutually exclusive. When both are present, treating the breathing problem alone commonly leaves the insomnia standing. A 2026 narrative review of comorbid insomnia and sleep apnea found that single-modality treatment often leaves residual symptoms, and that CBT-I shows meaningful benefit in this group — while being clear that remission rates run lower than in insomnia without apnea [10]. If you are on CPAP and still cannot sleep, that is recognized and treatable. Keep using what your physician prescribed.
🧪 Key takeaway: A sleep study asks whether another sleep disorder is present. It does not diagnose or rule out chronic insomnia, which is identified from your history.
Where chronic insomnia actually lives
If the mechanism is not in the airway or the limbs, where is it? Insomnia usually starts for one reason and continues for a different one.
Conditioned arousal
Something sets it off — a bereavement, a newborn, a stretch of shift work, pain, a hard year. Then the trigger resolves and the sleeplessness does not. The behavioral account that has organized insomnia treatment since the 1980s holds that the factors perpetuating insomnia keep operating long after the ones that precipitated it have gone [4].
The mechanism is learning. Night after night you pair getting into bed with lying there frustrated and alert. Eventually the bed, the bedroom and the routine leading to them stop being cues for sleepiness and become cues for arousal [4]. It is the same associative machinery that makes a kitchen smell trigger hunger, working against you — not a character weakness, and not permanent. It explains the experience people describe most: exhausted on the sofa, wide awake the moment their head hits the pillow. Our piece on conditioned arousal goes deeper.
The compensations that keep it going
The second half of the loop is everything sensible you have done about it.
Consider a week that probably looks familiar. After a bad Tuesday you go to bed at nine-thirty on Wednesday to bank extra hours, so you lie awake ninety minutes instead of thirty. Thursday you are wrecked by mid-afternoon, nap forty minutes on the sofa after work, and cannot drop off until one. Friday you sleep in because it is finally the weekend, and Sunday night is the worst of the week. Each decision was a reasonable response to the night before, and together they have spread eight hours of sleep pressure across eleven hours in bed.
Or you have started watching the clock. You know without looking that it is 3:40, you check anyway, and the number produces a jolt of adrenaline followed by arithmetic about the meeting at nine. You have also begun protecting sleep in advance — declining evening plans, no coffee after ten in the morning, the bedroom kept in near-ceremonial quiet. The effort is real, and it is working against you.
Spielman's account identifies excessive time in bed as a perpetuating factor regardless of how the insomnia started, and notes that daytime napping disrupts consolidation at night [4]. Recent work maps the cognitive side: a 2023 systematic review found sleep-related worry to be the factor most shared across insomnia models, alongside sleep effort — the active attempt to sleep and to increase the opportunity for it [6]. There is also longitudinal evidence that sleep-related safety behaviors predicted insomnia severity a year later even after accounting for baseline severity — though in a non-clinical sample of university students, and only 79 of the original 353 completed the follow-up, so read it as a lead rather than a settled finding [7].
🔁 Key takeaway: Chronic insomnia is usually maintained by learned arousal and by the compensations that follow a bad night, not by whatever started it.
What CBT-I adds
Cognitive behavioral therapy for insomnia is the recommended first-line treatment for chronic insomnia disorder in adults. The American Academy of Sleep Medicine gives multicomponent CBT-I its strongest grade of recommendation [1], and the 2023 European insomnia guideline recommends it first-line for adults of any age, including those with other conditions alongside it, delivered in person or digitally [2]. Both of those guidelines address adults; the evidence base for adolescents is separate and thinner, which is worth raising directly if the reader here is a teenager.
What it adds is leverage on the two mechanisms above. It is not a relaxation course, and it is not a habits checklist with a longer name — our explainer on what CBT-I includes sets out the components.
Rebuilding the sleep drive
The first move is usually to shorten time in bed rather than extend it — matching your sleep opportunity to the sleep you currently produce, then expanding as sleep becomes solid. The effect is to concentrate sleep pressure instead of spreading it thin.
This part is demanding and deserves a plain warning. Expect to be sleepier during the day while time in bed is compressed. One study measuring this found reduced total sleep time, higher daytime sleepiness scores across the first three weeks and measurably slower reaction times, all normalizing by three months [13]. A two-week trial using a driving simulator found no significant change in sleepiness or in simulated driving [14] — but it was small, uncontrolled and likely underpowered, and neither study tested real driving on real roads.
So treat the acute phase as a period of reduced alertness: do not drive or operate machinery when you feel sleepy during it, and tell your clinician at the outset if you drive for work, so the schedule is built around that rather than discovered to conflict with it. This is also a reason to do the treatment with a clinician rather than from an article.
Breaking the bed-and-wakefulness link
The second move targets the conditioning directly. Bed is for sleep, and when you are lying there awake and frustrated you get up, leave, and return when sleepy. Done consistently, this stops reinforcing the association between bedroom and alert wakefulness.
Alongside both, the cognitive work addresses the arithmetic, the catastrophizing about tomorrow, and sleep effort — the active attempt to sleep and to increase the opportunity for it, which insomnia models treat as part of what maintains the problem rather than a route out of it [6].
Two honest notes. Treatment is short, typically a handful of weekly sessions. And the gains persist but attenuate: a meta-analysis of long-term follow-up found effects still present at three, six and twelve months, falling from a moderate effect at three months to a small one at twelve [9]. A behavioral sleep assessment is where the specifics of your own pattern get sorted out, because the right starting prescription depends on what your nights look like now.
🛏️ Key takeaway: CBT-I works on time in bed and on what your body associates with it. Those are the two levers a sleep study cannot reach.
When to go back to sleep medicine instead
This is the most important section here, and it is deliberately not buried at the end.
A normal sleep study is a snapshot of one night, answering the questions it was set up to answer. Things change, and some things are missed. Go back to your physician or sleep specialist, rather than starting behavioral treatment, if any of these apply:
Loud snoring, gasping, or witnessed pauses in breathing, or any of these appearing or worsening since the study
Falling asleep unintentionally during the day, especially while driving, in conversation, or at work
Physically acting out dreams, or injury to yourself or a bed partner during sleep
Unexplained leg discomfort or an urge to move your legs in the evening that eases with movement
Morning headaches, new or uncontrolled high blood pressure, or significant weight gain since the study
Sudden muscle weakness triggered by laughter or strong emotion, sleep paralysis, or vivid hallucinations as you fall asleep
Excessive daytime sleepiness that persists or is worsening, however you sleep at night
None of that means avoiding CBT-I permanently. It means sequencing correctly, because a behavioral treatment aimed at a medical sleep disorder will not fix it and will delay the thing that would. A behavioral sleep assessment screens for these signs and refers back to sleep medicine when they are present; it cannot itself diagnose or rule out a medical sleep disorder. So if anything on that list applies, your physician comes first — and if you are unsure, bring it to the first appointment rather than trying to settle it alone. Our sleep assessment page describes what that screening covers.
One more thing, and it matters: do not stop or change a prescribed sleep medication on your own. Coming off a hypnotic can cause rebound insomnia, and some require a planned taper. CBT-I is often exactly what makes a taper feasible, but the taper is your prescriber's decision and is planned alongside the treatment, not instead of it.
⚠️ Key takeaway: Witnessed breathing pauses, dream enactment, or daytime sleep attacks point back to sleep medicine. CBT-I is not a substitute for a medical workup.
When the schedule itself is the problem
One more possibility is worth separating out, because the answer differs.
If your sleep problem tracks your roster rather than your bedroom, the picture may not be insomnia. Night shifts, rotating schedules, on-call weeks, or a body clock that has always run several hours late are circadian problems, and treatment adapts around the schedule rather than imposing a conventional night on it. Some moves in this article change shape there; a few change direction entirely. We have written that up separately for readers dealing with shift work and irregular schedules. If that describes you better than the two-in-the-morning arithmetic above, start there.
Starting in Chattanooga
A practical note, because Chattanooga is not where our office is.
We deliver CBT-I entirely online, by secure video, to adults and teens located in Tennessee. There is no in-person option for this treatment, and our only office is in Nashville. So for a Chattanooga reader, remote delivery is not a preference — it is how this treatment is offered, and it is worth knowing what the evidence says about that. A randomized noninferiority trial comparing video-delivered CBT-I with in-person care found comparable improvement in insomnia severity, the difference falling inside the prespecified margin [11], and the American Academy of Sleep Medicine's position statement on sleep telehealth states that telehealth is noninferior for delivering CBT-I [12]. That trial was small and single-site, so "comparable" is the right word rather than "identical" — and the largest component analysis of CBT-I delivery formats mildly favored in-person delivery [8]. On the available evidence remote CBT-I is a sound way to receive this treatment, not a demonstrably better one.
Sessions run weekly, and the work is short-term and skills-based rather than open-ended. Care is delivered by licensed Tennessee clinicians with specialized training in behavioral sleep medicine, adapted where insomnia sits alongside anxiety, ADHD, autism, trauma or chronic pain. We are an out-of-network practice: payment is self-pay, eligible for FSA and HSA funds, with interest-free payment plans available and a superbill provided if you intend to seek reimbursement. Coverage varies by plan, so check yours.
If your sleep difficulty sits inside a broader picture, our specialized therapy services describe how that is handled. For a structured read on how much your sleep is affecting the rest of your functioning, the PROMIS-29 includes a sleep disturbance measure alongside pain, fatigue and mood.
Questions worth asking before you book
Ask these directly. They are also a reasonable way to tell a CBT-I provider from a general therapist willing to discuss sleep.
Scope. Do you deliver full CBT-I, including sleep restriction and stimulus control, or sleep-focused counseling and relaxation? Only the first has first-line guideline support.
Sequencing. My sleep study was normal. How will you decide whether something medical has been missed, and when would you send me back?
Method. What will you ask me to do in the first two weeks, and how will we handle it if I get sleepier before I get better?
Measurement. How will we track whether this is working, and over what period, rather than relying on how last night felt?
Output. At the end, what will I have — skills I can reapply if this recurs in five years, or a plan that depends on continuing to see you?
📋 Key takeaway: Ask whether a provider delivers full CBT-I with sleep restriction and stimulus control. Sleep-focused talking therapy is a different thing with a different evidence base.
Where this leaves you
A normal sleep study answered a question that needed answering and left yours open. Chronic insomnia is diagnosed from your history, maintained by learned arousal and the compensations that follow a bad night, and treated first-line with CBT-I rather than a longer list of habits. If there are signs of a medical sleep disorder, those come first. If there are not, the next step is a structured assessment of your sleep pattern and a plan built from it.
🧭 Key takeaway: A normal study plus persistent sleeplessness is a recognisable clinical picture with a first-line treatment. It is not a dead end.
Sleep not coming easily?
CBT-I is the first-line, evidence-based treatment for chronic insomnia — a clinician can help you rebuild sleep without relying on medication alone.
Frequently Asked Questions
Does a normal sleep study mean I don't have insomnia?
No. A sleep study looks for other sleep disorders, such as sleep apnea or periodic limb movements. Chronic insomnia is diagnosed from your history and your sleep pattern over time, not from a single night of monitoring. A normal study is useful information, and it does not mean your sleep problem is imaginary or untreatable.
Why did my sleep study say I slept longer than it felt like?
That gap between measured sleep and felt sleep is a recognized feature of chronic insomnia rather than a sign you are exaggerating. The leading explanation proposes heightened brain activity around sleep onset that blurs the line between light sleep and wakefulness, so time you did spend asleep can be remembered as time awake. It is a described feature of the condition, not a judgment about your reporting.
Can i do CBT-I if I am already using CPAP for sleep apnea?
Yes, and treating the apnea alone often is not enough. When insomnia and sleep apnea occur together, addressing the breathing problem frequently leaves the insomnia in place. A 2026 narrative review of comorbid insomnia and sleep apnea reports meaningful benefit from CBT-I in this group, though remission rates tend to be lower than in insomnia without apnea. Keep using the treatment your sleep physician prescribed.
How is CBT-I different from the sleep hygiene advice I already tried?
Sleep hygiene is a list of habits. CBT-I is a structured treatment that changes how much time you spend in bed and what your body associates with being there. In a large network meta-analysis, sleep hygiene education on its own showed essentially no benefit for chronic insomnia; the best-performing combinations paired sleep restriction and stimulus control with cognitive methods, at a number needed to treat of about three.
When should I go back to my sleep doctor instead of starting CBT-I?
Go back if you have loud snoring with witnessed pauses, if you fall asleep without intending to during the day, if you act out dreams physically, if you have unexplained leg movements or morning headaches, or if sleepiness is affecting your driving. Those point toward a medical sleep disorder that needs assessment or treatment in its own right, and CBT-I is not a substitute for that workup.
About the Author
Dr. Kiesa Kelly is a licensed clinical psychologist and the founder of ScienceWorks Behavioral Healthcare. Her background includes more than twenty years of work in psychological assessment and evidence-based treatment, with clinical training across several major universities.
Her clinical interests include the conditions that most often sit alongside chronic insomnia — anxiety, OCD, trauma, ADHD and autism — which is why sleep work at this practice is set up to account for them rather than treat sleep in isolation. Every clinical article published here carries a licensed clinician's accuracy review before it goes out.
References
1. Edinger JD, Arnedt JT, Bertisch SM, Carney CE, Harrington JJ, Lichstein KL, et al. Behavioral and psychological treatments for chronic insomnia disorder in adults: an American Academy of Sleep Medicine clinical practice guideline. J Clin Sleep Med. 2021;17(2):255-262. https://doi.org/10.5664/jcsm.8986
2. Riemann D, Espie CA, Altena E, Arnardottir ES, Baglioni C, Bassetti CLA, et al. The European Insomnia Guideline: an update on the diagnosis and treatment of insomnia 2023. J Sleep Res. 2023;32(6):e14035. https://doi.org/10.1111/jsr.14035
3. Littner M, Hirshkowitz M, Kramer M, Kapen S, Anderson WM, Bailey D, et al. Practice parameters for using polysomnography to evaluate insomnia: an update. Sleep. 2003;26(6):754-760. https://academic.oup.com/sleep/article-pdf/26/6/754/23682774/sleep-26-6-754.pdf
4. Spielman AJ, Caruso LS, Glovinsky PB. A behavioral perspective on insomnia treatment. Psychiatr Clin North Am. 1987;10(4):541-553. https://www.med.upenn.edu/cbti/assets/user-content/documents/Spielman%203P%20Model%20Clinics%20of%20North%20America%201987.pdf
5. Perlis ML, Giles DE, Mendelson WB, Bootzin RR, Wyatt JK. Psychophysiological insomnia: the behavioural model and a neurocognitive perspective. J Sleep Res. 1997;6(3):179-188. https://doi.org/10.1046/j.1365-2869.1997.00045.x
6. Tang NKY, Saconi B, Jansson-Frojmark M, Ong JC, Carney CE. Cognitive factors and processes in models of insomnia: a systematic review. J Sleep Res. 2023;32(6):e13923. https://doi.org/10.1111/jsr.13923
7. Lancee J, Kamphuis JH. Sleep-related safety behaviours predict insomnia symptoms 1 year later in a sample of university students. J Sleep Res. 2024;34(3):e14381. https://pmc.ncbi.nlm.nih.gov/articles/PMC12069750/
8. Furukawa Y, Sakata M, Yamamoto R, Nakajima S, Kikuchi S, Inoue M, et al. Components and delivery formats of cognitive behavioral therapy for chronic insomnia in adults: a systematic review and component network meta-analysis. JAMA Psychiatry. 2024;81(4):357-365. https://doi.org/10.1001/jamapsychiatry.2023.5060
9. van der Zweerde T, Bisdounis L, Kyle SD, Lancee J, van Straten A. Cognitive behavioral therapy for insomnia: a meta-analysis of long-term effects in controlled studies. Sleep Med Rev. 2019;48:101208. https://doi.org/10.1016/j.smrv.2019.08.002
10. Nahidi S, Agidi S, El-Solh AA. Comorbid insomnia and sleep apnea: mechanistic convergence, phenotypic heterogeneity, and clinical implications. Curr Sleep Med Rep. 2026;12:33. https://doi.org/10.1007/s40675-026-00384-w
11. Gehrman P, Gunter P, Findley J, Frasso R, Weljie AM, Kuna ST, et al. Randomized noninferiority trial of telehealth delivery of cognitive behavioral treatment of insomnia compared to in-person care. J Clin Psychiatry. 2021;82(5):20m13723. https://www.psychiatrist.com/jcp/telehealth-delivery-of-cbt-for-insomnia-vs-in-person-care/
12. Vohra KP, Johnson KG, Dalal A, Ibrahim S, Krishnan V, Abbasi-Feinberg F, et al. Recommendations for permanent sleep telehealth: an American Academy of Sleep Medicine position statement. J Clin Sleep Med. 2025;21(2):401-404. https://doi.org/10.5664/jcsm.11438
13. Kyle SD, Miller CB, Rogers Z, Siriwardena AN, MacMahon KM, Espie CA. Sleep restriction therapy for insomnia is associated with reduced objective total sleep time, increased daytime somnolence, and objectively impaired vigilance: implications for the clinical management of insomnia disorder. Sleep. 2014;37(2):229-237. https://doi.org/10.5665/sleep.3386
14. Whittall H, Pillion M, Gradisar M. Daytime sleepiness, driving performance, reaction time and inhibitory control during sleep restriction therapy for chronic insomnia disorder. Sleep Med. 2018;45:44-48. https://pubmed.ncbi.nlm.nih.gov/29680427/
Disclaimer
This article is for informational purposes only and is not a substitute for individual medical or mental health advice, diagnosis or treatment. Reading it does not create a clinician-patient relationship. If you have symptoms of a medical sleep disorder, or if sleepiness is affecting your ability to drive or work safely, speak with a qualified healthcare professional. If you are in crisis, contact your local emergency services or call or text 988 in the United States.