Relaxation treatment of pseudoinsomnia and idiopathic insomnia: an electroencephalographic evaluation.

The team worked with adults who said they could not fall asleep. Some had "pseudoinsomnia" — they felt awake but EEG showed normal sleep. Others had "idiopathic insomnia" — EEG proved they really took longer to fall asleep.

Each adult tried two kinds of relaxation. One was passive: lie still and breathe. The other was tension-release: squeeze and let go of each muscle group. The order flipped each night so the design stayed fair.

Tension-release beat passive relaxation on every self-rating of sleep speed. The EEG backed this up only for the true insomniacs; their actual sleep time dropped after tension-release. Gains were still there one year later.

People who only felt awake showed no EEG change, but they still liked the tension-release nights best.

Ladouceur et al. (1997) later copied the same A-B style test in adults with profound ID. Relaxation and snoezelen lifted attention while bouncy play did not. Both studies say the same thing: active relaxation beats passive fun.

Hare et al. (2006) and Day et al. (2021) show autistic adults sleep far worse than peers. Their data extend the 1979 finding: once you prove relaxation shortens sleep latency, you have a cheap tool ready for this high-risk group.

Mulder et al. (2020) asked parents of children with CHARGE what works. Parents picked bedtime routines and melatonin, not weighted blankets. Together with Reberg et al. (1979) we see a pattern: simple, repeatable wind-down skills outrank gear or pills.

You can teach tension-release in one session. Use it as a nightly routine for any adult who reports long sleep lag, especially clients with autism or ID where poor sleep is common. No gear, no cost, and the 1979 data say gains stick around for a year.