Yes, it is completely normal for newborns to sleep a lot. Most newborns sleep about 16 to 17 hours per day, spread across many short stretches rather than long nighttime blocks. That can look alarming to new parents who expected more awake time, but heavy sleeping is exactly what a healthy newborn’s brain and body need during the first weeks of life.
How Much Sleep Is Typical
In the first few weeks, expect your baby to be asleep far more than awake. Those 16 to 17 hours rarely come in predictable chunks. Most newborns sleep in stretches of two to four hours, waking briefly to feed before drifting off again. About half of that total sleep time is spent in active (REM) sleep, which is why you’ll notice your baby twitching, making faces, or breathing irregularly while asleep. This is normal and plays a role in brain development.
Newborns don’t yet have an internal clock distinguishing day from night. That circadian rhythm doesn’t begin developing until around two to four months of age and isn’t fully established until at least 12 months, sometimes later. This is why your newborn sleeps in scattered bursts around the clock, with no preference for nighttime. Most babies don’t sleep through the night (six to eight continuous hours) until at least three months, and some not until closer to their first birthday.
Growth Spurts Can Mean Even More Sleep
If your baby suddenly starts sleeping even more than usual, a growth spurt may be the reason. Research published through the American Academy of Sleep Medicine found that infants experience irregular bursts of increased sleep, averaging an extra 4.5 hours per day for about two days at a time, along with roughly three additional naps per day. These sleep surges were closely tied to measurable increases in body length, which tended to occur within 48 hours of the extra sleep. Each additional hour of sleep increased the probability of a growth spurt by 20 percent.
These episodes are unpredictable and don’t follow a neat calendar, so a few days of unusually heavy sleep in an otherwise healthy baby are rarely a concern.
When to Wake Your Baby for Feeding
Even though newborns need a lot of sleep, they also need frequent feedings. Most newborns eat 8 to 12 times per day, roughly every two to three hours. In the first one to two weeks, while your baby is still regaining their birth weight (most newborns lose some weight in the first few days), you should wake them for a feeding if it’s been more than four hours since the last one.
Once your baby has regained their birth weight and is gaining consistently, it’s generally fine to let them sleep until they wake on their own. If you’re unsure whether your baby has hit that milestone, your pediatrician will track weight at early checkups.
Sleepy Versus Lethargic
There’s an important difference between a baby who sleeps a lot and a baby who is lethargic. A healthy sleepy newborn wakes for feedings, is alert and active during awake periods (even if those periods are short), feeds well, and can be comforted when crying. Meeting those criteria means the sleepiness is normal, even if it feels like your baby is sleeping “too much.”
A lethargic baby looks different. Lethargic newborns appear to have little or no energy, are drowsy or sluggish even when awake, and may be hard to rouse for feedings. When they do wake, they aren’t attentive to sounds or visual cues. A baby who sleeps continuously and shows little interest in feeding may be ill and needs prompt medical attention.
One specific condition that causes excessive sleepiness is jaundice, which is common in the first week. When bilirubin (a waste product from red blood cell breakdown) builds up faster than a newborn’s liver can process it, it can cross into brain tissue and cause unusual drowsiness. Mild jaundice is very common and usually resolves on its own, but significant jaundice that makes a baby too sleepy to eat needs treatment. If your baby’s skin or the whites of their eyes look yellowish and they’re increasingly difficult to wake, that combination warrants a call to your pediatrician.
Signs Your Baby Is Getting Enough to Eat
When your baby sleeps heavily, the easiest way to confirm they’re doing fine is to count wet diapers. By day six and beyond, a well-hydrated newborn produces six to eight wet diapers per day, with some babies hitting ten. If your baby goes more than eight hours without urinating or consistently has fewer than six wet diapers a day, those are signs of possible dehydration. Steady weight gain at checkups is the other reliable indicator that sleep isn’t interfering with nutrition.
Safe Sleep Basics
Because newborns spend so much time asleep, how they sleep matters as much as how long. The American Academy of Pediatrics recommends placing your baby on their back for every sleep, including naps. Use a firm, flat mattress in a safety-approved crib or bassinet with only a fitted sheet. Keep the sleep area free of blankets, pillows, bumper pads, and soft toys. Room-sharing (keeping the crib in your bedroom) is recommended for at least the first six months.
Avoid letting your baby get too hot while sleeping. If their chest feels hot to the touch or they’re sweating, they may be overdressed or the room may be too warm. Offering a pacifier at nap and bedtime is also associated with reduced risk of sleep-related infant death. If you’re breastfeeding, you can wait until breastfeeding is well established before introducing one.