Sleep

Split night

Also called split nights, split-night

A split night is when a baby wakes in the middle of the night and stays wide awake for a long time, often one to three hours, before sleeping again. The baby is usually alert and playful rather than upset.

How it's said

  • Please tell me someone has found out the reason for the absolute nightmare that is split nights.
  • I'm a sleep consultant, and split nights can be tricky!
  • ...we've had a split night almost every night, with my 7MO awake for around an hour, usually at some point between 3 and 5 AM.

Who says it

  • Parents on forums
  • Sleep consultants

Not to be confused with

  • A false start is a full wake within the first hour or so after bedtime. A split night comes later, a long, wide-awake stretch in the middle of the night.

Where it came from

Sleep coaches use the word for a long, wide-awake stretch in the night, most often between 8 and 24 months.

The pattern echoes an older one. Historian Roger Ekirch has argued that before the Industrial Revolution, adults often slept in two parts, a first sleep and a second sleep, with time awake between.

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