Why Won't Your Mind Quiet Down When You Get Into Bed?

In 1980, researchers asked 296 insomniacs a simple question: is your problem physical tension or a busy mind? Mental preoccupation won by a factor of ten, redirecting sleep science away from muscle relaxation toward cognitive closure. A 2018 polysomnography study confirmed the mechanism: subjects who wrote five-minute to-do lists fell asleep faster than those who journaled about completed tasks. The fix isn't silencing thought but relocating it, offloading unfinished business onto paper before the mind hits the pillow.

You'll learn:

- Why exhaustion alone never guarantees sleep

- How the Zeigarnik effect keeps open loops running

- What a two-column closing ritual actually measures