A–Z Glossary

Infant sleep cycles

Infant sleep cycles are short, light sleep periods that commonly end with brief waking, stirring, vocalizing, or crying.

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Why baby cries more at night

Why baby cries more at night

Infant sleep makes night crying common Babies do not sleep like older children or adults. Their sleep is lighter, more fragmented, and organized into relatively short cycles. At the end of a cycle, a baby may stir, vocalize, open their eyes, or cry before returning to sleep. Waking between infant sleep cycles is therefore expected, […]