Restless sleep in newborns
Overview
Restless sleep in newborns: A normal stage of brain development
Parents often expect their newborn's sleep to be quiet and calm. Therefore, when the baby in sleep starts cooing, twitching, smiling and waving arms, it causes concern. However, in most cases, such "restless" sleep is completely normal and indicates intensive brain development. This is a manifestation of the so‑called active sleep phase (REM).
Why is a newborn's sleep so "active"?
Unlike adults, in whom the active sleep phase occupies about 25% of the time, in newborns it accounts for up to 50%. It is in this phase that the brain actively processes information, forms neural connections, and "sees" dreams. This brain activity also manifests physically: limb movements, facial expressions, sounds, sleep with half‑open eyes. More details can be read in the article about the physiology of newborn sleep.
When can restless sleep be a sign of discomfort?
Attention should be paid if restless sleep is accompanied by intense crying and full awakening. The cause may be:
- Physical discomfort: Gas pain, reflux, wet diaper, uncomfortable temperature.
- Hunger: The baby may show distress when feeding time approaches.
Observing the context will help distinguish normal active sleep from sleep disrupted by discomfort.
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