A–Z Glossary

Sleep regression

Sleep regression is a temporary period when a baby’s sleep becomes more disrupted around developmental changes or new skills.

← Back to A–Z Glossary

Search results for: Sleep regression

Baby wakes every hour

Baby wakes every hour

Why a baby may wake every hour Infant sleep is biologically different from adult sleep. Babies spend substantial time in active sleep, a lighter phase that may include facial movements, brief vocalizations, limb movements, and irregular breathing. They may appear awake even when they have not fully emerged from sleep. As one sleep cycle ends, […]