
It can be distressing for parents to see their newborn cry in their sleep, but it's important to remember that it's usually normal. Newborns are still adjusting to life outside the womb and often cry to communicate their needs, with hunger being the most common reason. Other reasons for crying in sleep include teething pain, an uncomfortable sleep environment, nightmares, or simply transitioning between sleep cycles. Understanding the reasons for your newborn's crying can help you address their needs and promote a peaceful sleep environment.
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What You'll Learn
- Babies cry in their sleep because they are hungry or need a diaper change
- They might be too hot or cold
- Babies are new to the world and can't communicate any other way
- They are still learning to regulate their emotions and may not be able to control their crying reflex
- Babies go through many developmental changes, including changes to how they sleep

Babies cry in their sleep because they are hungry or need a diaper change
It can be distressing to see your newborn cry in their sleep, but it's important to remember that it's entirely normal. Babies sleep for longer overall and in shorter bursts, particularly newborns, and their sleep patterns are different from those of children and adults. They spend more time in rapid-eye-movement (REM) sleep, also known as light sleep, during which they dream and their eyes move behind their eyelids. They might also jerk or twitch, and their breathing may become irregular. These movements are a natural part of their sleep cycle.
Occasional crying during sleep is usually nothing to worry about, but if you're concerned about persistent crying in longer bursts, you can contact your healthcare provider for advice. Keeping a record of when and how often your baby cries can be helpful for your healthcare provider to identify any underlying causes. It's also essential to ensure that your baby's sleep environment is comfortable and peaceful, as this will help them get used to the idea that night-time is for sleeping.
One reason why your newborn may be crying in their sleep is that they are hungry. Breastfed babies may seem unsettled around feeding time, and improving their positioning and attachment can help settle them. If you're concerned about your baby's feeding or think they may have reflux or colic, it's best to consult your healthcare provider for advice. Additionally, if your baby is crying during the night, it might be a sign that they need a feed.
Another possible reason for your newborn's crying during sleep is that they need a diaper change. Babies may not always be bothered by a wet diaper, but it's important to check it regularly to prevent saturation, leakage, and potential skin irritation or infection. A dirty diaper can cause discomfort and crying, and diaper changes should be done at regular intervals, although the frequency may vary from baby to baby.
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They might be too hot or cold
It is important to ensure your newborn is dressed appropriately for the temperature of their sleeping environment. Overheating can be a serious risk factor for sudden infant death syndrome (SIDS), so it is crucial to avoid over-bundling or over-layering your baby's clothing and bedding. Check your baby's chest or back to determine if they are too hot or cold. Their skin should feel warm, but not hot or sweaty. Adjust the amount of bedding or clothing if your baby feels too warm or cool to the touch. In general, it is recommended to dress a newborn in one layer more than an adult would wear in the same environment. For example, if you are comfortable in a T-shirt and light pants, your baby might need a thin onesie and a lightweight sleep sack. Keep the room temperature comfortable, aiming for a cool range of 68 to 72 °F (20 to 22.2 °C).
Babies can lose heat quickly through their heads, so ensure your baby wears a lightweight beanie or hat if it is particularly cool. Conversely, if it is very warm, dress your baby in minimal clothing, perhaps just a diaper and a thin onesie. Ensure the crib or bassinet is free of excessive bedding or soft toys, which can contribute to overheating and pose a safety risk. A good indicator that your baby is too warm is if their skin is hot and dry, and they are sleeping longer than usual or are difficult to wake. If you notice these signs, remove some layers and ensure the room temperature is comfortable.
On the other hand, if your baby is too cold, they might display signs of shivering, have cold hands and feet, or their skin may appear pale or blue-tinged. Add an extra layer, such as a lightweight blanket or a thicker sleep sack, and ensure the room temperature is comfortable. Avoid placing a blanket directly over your baby's head, as this can increase the risk of suffocation. Instead, consider using a sleep sack or swaddle to keep them warm. If you are using a swaddle, ensure your baby's hips can move freely and are not constrained in an unnatural position, as this can lead to hip problems.
It is important to regularly check your newborn's temperature and adjust their clothing or bedding accordingly. Newborns are still adjusting to regulating their body temperature, so they may be more sensitive to temperature fluctuations. By ensuring your baby is dressed appropriately and their sleeping environment is comfortable, you can help reduce the likelihood of crying due to discomfort from being too hot or cold. Remember to always place your baby on their back to sleep, as this position is safest for reducing the risk of SIDS.
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Babies are new to the world and can't communicate any other way
Babies are new to the world and can't communicate in any other way but through crying. There are multiple reasons why newborns cry in their sleep. Hunger is the most common reason, especially in newborns who nurse or take a bottle every few hours. They might also be crying because they need their nappy changed, or because they're too hot or cold.
Newborns go back and forth between non-rapid eye movement (NREM) and rapid eye movement (REM) sleep. When they're in the REM phase, they're dreaming, which can often come with some noises and tears. This is similar to an adult talking in their sleep. Babies also don't sleep in the same way as adults or older children. They sleep for longer overall and in shorter bursts, and they spend more time in REM sleep, which is when they dream. They might appear unsettled, but these movements are just part of their natural sleep cycle.
It's also possible that newborns are crying in their sleep because they're experiencing a nightmare. As they develop their imaginations, they may start to have bad dreams and cry in their sleep. This can be scary for them, and they may need comforting.
If your baby is crying in their sleep, it's important to try to soothe them and see if they settle down. You can try leaving them for a moment to see if they can drift back to sleep on their own, or you can try a belly rub and a calming voice to let them know you're there. Swaddling can also help calm your baby and promote good sleep, but only until they show signs of rolling over.
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They are still learning to regulate their emotions and may not be able to control their crying reflex
It is quite common for babies to cry in their sleep. This is because they are still learning to regulate their emotions and may not be able to control their crying reflex.
Babies sleep differently from children and adults. They sleep for longer overall, but in shorter bursts, especially newborns. Their sleep patterns are also different. Newborns go back and forth between non-rapid eye movement (NREM) and rapid eye movement (REM) sleep. During the REM phase, they dream, and this can often be accompanied by noises and tears. It is similar to an adult talking in their sleep. While it can be alarming for parents to see their baby crying in their sleep, it is usually nothing to worry about.
As babies grow, they go through a lot of developmental changes, including changes to how they sleep. They will start experiencing two additional NREM stages, which tend to be lighter, and this means that their sleep is more easily disrupted by wake-ups and nighttime crying. Their brain development can also make them more unsettled, and cause crying and sleep regression.
Babies also cry in their sleep because they are new to the world and can't communicate in any other way. Hunger is a common reason for nighttime crying, especially in newborns who need to eat often. As your baby grows, you will be able to anticipate their night feeds and learn what a 'hungry' cry sounds like. Gas can also be a reason for crying at night, as being less active or upright can make gas more uncomfortable.
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Babies go through many developmental changes, including changes to how they sleep
At around three months, babies may start to learn the rhythm of day and night. Parents can help newborns learn to sleep more at night by exposing them to light and gently playing with them during the day, and providing a dim and quiet environment at night.
In the first three months, newborns cry a lot as it is their main way of communicating. They may cry because they need help to feed, change or settle so they can get back to sleep. Crying is also a late sign of hunger in newborns. Babies may not be able to establish their own sleeping and waking patterns, especially when it comes to falling asleep. They may expect to be in their parents' arms to fall asleep if that is how they have always fallen asleep.
Babies go through several sleep stages. At the beginning of the sleep cycle, they enter stage 1, then move into stages 2, 3, and 4, before moving back through stages 3 and 2, and finally to REM sleep. These cycles may occur several times during sleep. Babies may awaken as they pass from deep sleep to light sleep and may struggle to go back to sleep. During active or REM sleep, a baby may move, groan, open their eyes, cry out, or breathe noisily or irregularly. During quiet or non-REM sleep, they will lie relatively still and their breathing will be more even.
As babies grow, they will experience two additional NREM stages, like adults. These stages tend to be lighter, and this means that as the baby adjusts to this new sleep pattern, their sleep is more easily disrupted by wake-ups and nighttime crying.
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Frequently asked questions
Yes, it's quite common for babies to cry in their sleep. This is because they are still learning to regulate their emotions and may not be able to control their crying reflex. It's also possible that they are experiencing a dream or nightmare.
Newborns cry in their sleep because they are new to the world and can't communicate in any other way. Hunger is probably the most common reason, especially in newborns who nurse or take a bottle every few hours. They might also cry in their sleep because they are too hot or cold, they need a new diaper, or they are overtired.
The Moro Reflex is the involuntary movement of a newborn's limbs. Since they don't have full control of their body yet, they sometimes twitch or jerk in their sleep, which can cause them to cry in their sleep.
If your baby is crying in her sleep, try to soothe them and see if they will settle down. You can also try swaddling your baby, but only until they show signs of rolling over. As your baby grows, you'll be able to better pinpoint what's happening.
It's actually quite common for babies to cry in their sleep. During the first three months of life, two to three hours of daily crying is considered normal.


























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