What CBT-I actually contains
CBT-I is a bundle, not a single technique. Five components appear in most protocols:
- Stimulus control — repairing the association between bed and sleep. Detail: stimulus control.
- Sleep restriction — compressing time in bed to consolidate sleep. Detail: sleep restriction therapy.
- Cognitive restructuring — dismantling catastrophic beliefs about sleep ("if I do not sleep eight hours tomorrow is ruined") that generate the anxiety keeping you awake.
- Sleep hygiene education — the environmental and timing basics. Detail: sleep hygiene.
- Relaxation training — breathing, progressive muscle relaxation, or body-based methods that lower physiological arousal.
The first two carry most of the effect. Sleep hygiene alone, contrary to its popularity online, is a weak treatment for established insomnia.
What the evidence shows
A meta-analysis covering 67 randomised trials and 5,232 participants found that CBT-I reduced insomnia severity by close to one standard deviation, shortened sleep onset latency by roughly 20 minutes, and improved sleep efficiency by more than 10 percentage points. Around 40% of participants reached remission and 70–80% showed meaningful improvement, with effects holding for at least 6–12 months after treatment ended. It remains effective for people whose insomnia travels with chronic pain, cancer, cardiovascular disease or depression.
That durability is the key comparison with medication. Hypnotics work while you take them. CBT-I changes the system, so the gains persist.
What the first two weeks feel like
People quit in week one because sleep restriction deliberately makes you sleep less before it makes you sleep better. Expect mild daytime sleepiness, some irritability, and — usually around day 10 to 14 — a noticeable drop in how long it takes to fall asleep and how often you wake.
Two safety notes: if your work involves driving or operating machinery, discuss the timing with a clinician before starting. And sleep restriction is not used, or is used cautiously, in people with bipolar disorder, uncontrolled epilepsy, or untreated sleep apnoea.
Getting CBT-I
- In person with a psychologist or sleep specialist trained in the protocol.
- Digitally — guided online programmes with automated sleep diary feedback perform reasonably well in trials and are far more accessible.
- Self-guided using a printed protocol and a sleep diary. Less effective than guided versions, but clearly better than nothing.
Where body-based methods fit
CBT-I works on the sleep system and on beliefs. It does not directly address the muscular and postural arousal that many people carry into bed — the jaw, the shoulders, the lower back, the habit of bracing against the mattress. That is the gap Feldenkrais work fills, and the fifth component of CBT-I, relaxation training, is the natural place to put it. In practice the combination is straightforward: stimulus control and sleep restriction change the schedule and the associations; a short movement or breathing practice changes the state you bring to bed.
See the concrete sequence in the Feldenkrais bedtime routine.
If CBT-I is not enough
Persistent insomnia after a proper CBT-I trial is a reason to look harder for other causes: sleep apnoea, restless legs syndrome, circadian rhythm disorders, medication side effects, or a mood or anxiety disorder. It is not a reason to conclude that nothing works.