Sleep restriction therapy

Temporarily compress your time in bed to match how much you actually sleep, then expand it as efficiency improves.

Why it works

Chronic insomnia often involves spending far more time in bed than sleeping, which fragments sleep and accumulates the anxiety of lying awake. Sleep restriction therapy consolidates sleep by limiting time in bed to the actual average sleep duration, building sleep pressure rapidly and producing faster onset and more consolidated sleep. As efficiency improves (typically in one to two weeks), time in bed is gradually extended.

How to do it

1. Track your actual average sleep time for one week; start with that as your new time-in-bed window.
2. Hold a fixed wake time and calculate a bedtime from it that gives you only that window.
3. Each week, extend time in bed by 15–30 minutes once sleep efficiency exceeds about 85%.

Evidence

Sleep restriction therapy has strong RCT support as a component and standalone treatment for insomnia, consistently reducing sleep onset latency and improving sleep efficiency. (rct)

The first week or two feel very hard — you are deliberately sleep-deprived. Not appropriate during tasks requiring high safety alertness (driving, shift work). Best done with a clinician.

Sources

• Spielman et al. (1987), a behavioral perspective on insomnia treatment, Psychiatric Clinics of North America
• Morin et al. (2006), psychological and behavioral treatments for insomnia, SLEEP

Common mistake

Quitting during the difficult first week when sleep feels worse, precisely when the pressure-building is doing its job.