Newborns (0–3 months) sleep about 14–17 hours a day, spread across many short stretches rather than one long night. Expect frequent waking, grunting, twitching, and even sleep-smiles — these all reflect normal active and quiet sleep cycles, not a problem to fix.
Newborn sleep can look chaotic, but almost all of it fits a predictable framework worth naming: the Active-Quiet model. Every newborn sleep period cycles between "active sleep" (the newborn version of REM — twitchy, noisy, dream-associated) and "quiet sleep" (deeper, stiller, more like adult non-REM sleep). Once you can recognize which state your baby is in, most of what feels strange — grunting, smiling, only settling when held — stops looking like a red flag and starts looking like biology working as expected.
According to the CDC, newborns (0–3 months) should get about 14 to 17 hours of sleep in a 24-hour day. That is meaningfully more than the 12–16 hours recommended for older infants (4–12 months), reflecting how much of a newborn's early development happens during sleep.
Newborns need this much sleep because so much of their early physical and neurological development happens while they are asleep, and their bodies have not yet built a strong circadian ("Process C") drive to concentrate sleep at night. Instead, sleep pressure builds and releases in short cycles around the clock, which is why a newborn's day looks like a series of naps rather than one wake period and one sleep period.
The 14–17 hour daily total from the CDC does not arrive as a single overnight block. Newborns typically distribute that time across many shorter stretches — day and night — because the internal clock that eventually favors nighttime sleep is still developing. There is no separately published "hours at night vs. hours in the day" split in current pediatric guidance; what is consistent is that the total, not the timing, is the meaningful number at this age.
In practice, this means a newborn waking every couple of hours around the clock, including overnight, is within the expected range rather than a sign that something is wrong with their sleep.
It is extremely common for a newborn to sleep well in arms but wake almost immediately when placed down. Being held recreates some of the warmth, motion, and containment of the womb, and a newborn's sleep is lighter and more easily disrupted than an older baby's or an adult's. This is a normal developmental stage, not a habit that has been created by "too much holding."
Because safe sleep guidance is still important during this stage, the CDC and AAP recommend that a newborn's actual sleep periods happen on a firm, flat surface on their back, rather than in a chair, on a couch, or in a seated carrier — even if contact naps happen during supervised awake-adjacent time.
A newborn who resists settling at night, or wakes frequently after dark, is usually experiencing the same lack of day/night rhythm described above rather than a distinct nighttime problem. Because the drive to concentrate sleep at night takes time to develop, nights and days can look similar for the first weeks, and frequent night waking is expected rather than a sign of poor sleep.
There is no single fix, since newborn sleep resistance is largely developmental, but the safe-sleep basics from the CDC and AAP remain the foundation of any approach: place the baby on their back on a firm, flat surface for sleep, avoid soft bedding or loose items in the sleep space, and consider room-sharing (not bed-sharing) — which the CDC notes can lower the risk of SIDS by up to 50%. Consistent, calm routines around feeding and settling can help, but expect this stage to improve gradually with age rather than overnight.
Active sleep is the newborn equivalent of REM sleep — a lighter, dream-associated state marked by twitching limbs, facial movements, irregular breathing, and sometimes small vocal sounds. It makes up a large portion of newborn sleep, more than it will later in infancy, and it is a normal, expected stage rather than a sign of disturbed sleep.
Quiet sleep, by contrast, is the newborn analog of non-REM sleep: stiller, with steadier breathing, and generally the state parents describe as "deep" sleep. Newborns cycle between active and quiet sleep repeatedly through the day and night, which is part of why their sleep looks so much more fragmented than an older child's or adult's.
Smiles, grimaces, and other small facial movements during sleep are typical features of active (REM-type) sleep, when the brain is highly active even though the baby is not conscious or reacting to anything in the room. These are considered reflexive movements tied to the active sleep state itself, not a response to a dream in the way older children or adults might experience one.
Newborn sleep patterns are defined by short cycles and frequent transitions between active and quiet sleep, repeated many times across a 24-hour day. This is a sharp contrast to adult sleep, which runs in much longer ultradian cycles of roughly 90 to 110 minutes. A newborn's cycles are considerably shorter than that adult benchmark, which is one reason newborns wake so much more often than older children or adults.
In neonatal sleep research, this same active/quiet cycling is often described as the earliest form of the sleep-stage architecture that later differentiates into the familiar NREM (N1, N2, N3) and REM stages seen in older children and adults. Over the following months, neonatal sleep gradually reorganizes into longer, more consolidated stretches with a stronger day/night distinction, as the circadian system matures.
Grunting during sleep is very common in newborns. Their breathing pattern is still irregular at this age, and their abdominal muscles are actively working — often to pass gas or stool — while lying flat, which produces grunting, straining, and brief pauses in breathing rhythm. This is generally part of normal active newborn sleep rather than a medical problem on its own.
Most newborn sleep quirks — grunting, twitching, smiling, only settling when held, frequent waking — are normal. Contact your pediatrician if you notice:
The American Academy of Pediatrics recommends discussing any safe sleep or breathing concern directly with your child's doctor rather than relying on general guidance alone.
For more on how sleep cycles and stages work beyond the newborn period, see core sleep. If nighttime settling and sound are a concern as your baby grows, best noise machines for sleep and colored noise for sleep cover how background sound is used around sleep. For the months ahead, baby sleep schedule and baby sleep music look at how routines and sound fit into an older baby's sleep. See the full sleep hub for more.