A–Z Glossary

Rapid eye movement sleep

Active sleep is an infant sleep state involving movements, facial expressions, sounds, and irregular breathing without full awakening.

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Can dreams predict pregnancy outcome

Can dreams predict pregnancy outcome

What dreams can and cannot tell you Dreams can feel uncannily specific, especially in pregnancy, when bodily changes, expectations, and fears are all active in the background. But feeling meaningful is not the same as being predictive. A dream is a subjective mental experience shaped by memory, attention, emotion, and sleep architecture. It can reveal […]

How often newborns eat and sleep

How often newborns eat and sleep

The typical newborn eat-sleep cycle During the first month, newborns generally alternate between feeding and sleeping rather than following a stable daily timetable. A baby may wake, feed, remain quietly alert for a short period, become drowsy, and sleep again. The entire sequence can be brief, and another feed may be needed sooner than a […]

How unpredictable newborn routine is

How unpredictable newborn routine is

Why newborn routines change so quickly During the neonatal period, routine is shaped by physiology rather than by a stable internal clock. A newborn’s stomach is small, feeding skills are still developing, and the infant may need repeated opportunities to feed over a 24-hour period. Basic care also generates frequent interruptions: diapers need changing, the […]

Why newborn wakes up frequently

Why newborn wakes up frequently

Newborn sleep is naturally fragmented Newborns do not sleep in the consolidated nighttime blocks that many adults expect. Their sleep is organized into relatively short episodes, separated by feeding, diaper changes, arousal, and brief periods of quiet alertness. The NHS notes that newborns often sleep more than they are awake, sometimes around 18 hours over […]

Hunger or Discomfort: Why a Newborn Wakes Up

Hunger or Discomfort: Why a Newborn Wakes Up

Why Newborns Wake So Often Newborn sleep is organized differently from adult sleep. Infants move through relatively short sleep periods and spend substantial time in active sleep, a state that may include facial movements, irregular breathing, brief vocalizations, and limb activity. These behaviors can look like waking even when the baby is not fully awake. […]

Active Sleep vs Awake Behavior in Babies

Active Sleep vs Awake Behavior in Babies

What active sleep means in infancy Active sleep is the infant state broadly analogous to rapid eye movement sleep, although the terminology and physiologic boundaries in newborns are not identical to those in adults. It occupies a large proportion of sleep in early life. During active sleep, the brain remains relatively activated, while the body […]

Noisy Baby Sleep: Grunting, Moving and Crying

Noisy Baby Sleep: Grunting, Moving and Crying

Why babies make noise during sleep Infant sleep is not a quiet, motionless state. Newborns spend a substantial proportion of sleep in active sleep, a state comparable in some ways to rapid eye movement sleep. During active sleep, breathing may be irregular, facial expressions may change, and the infant may make brief vocalizations. Small movements […]

Connecting Sleep Cycles Without Full Waking

Connecting Sleep Cycles Without Full Waking

What Happens Between Infant Sleep Cycles Sleep is not a single uniform state. It alternates between non-rapid eye movement sleep, or NREM sleep, and rapid eye movement sleep, or REM sleep. NREM sleep generally becomes progressively deeper, while REM sleep is associated with greater brain activity, variable breathing, eye movements, and more active dreaming in […]

Baby only sleeps when held

Baby only sleeps when held

Why babies often sleep better when held Holding offers several cues that help an immature nervous system settle. A caregiver’s body provides warmth, rhythmic movement, gentle pressure, familiar scent, and auditory input such as breathing and a heartbeat. These cues can reduce the abrupt sensory change that occurs when a baby is placed on a […]

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, […]

Helping baby settle independently

Helping baby settle independently

What independent settling means in infancy Independent settling is the developing ability to fall asleep, or return to sleep after a normal arousal, in a safe sleep space without needing the same level of caregiver assistance every time. It can include quietly looking around, sucking a hand, making small movements, vocalising briefly, or having a […]

Why babies smile randomly

Why babies smile randomly

Early smiles are often spontaneous, not social In newborns, a smile does not always mean the baby is expressing pleasure in the adult sense. Early facial smiles are frequently spontaneous, endogenous events that arise from immature nervous-system activity rather than from an external social cue. They can appear briefly and vanish just as quickly, which […]

Why babies move constantly

Why babies move constantly

Movement begins before birth A baby who seems to wiggle constantly is often continuing a pattern that began in the uterus. Fetal movement is not a late add-on to development; it is one of the earliest visible expressions of an active nervous system. Long before purposeful reaching or crawling, the fetus practices whole-body stretches, isolated […]

Calm vs active baby behavior

Calm vs active baby behavior

What calm and active behavior can mean A calm baby is often described as easy to soothe, observant, steady during transitions, and able to spend short periods in quiet alertness. Quiet alertness is a wakeful state in which the infant has open eyes, relatively smooth movements, and good availability for face-to-face interaction. A calm baby […]