
Crying in sleep is a common occurrence in babies and can be due to various reasons such as hunger, sickness, teething, or nightmares. While it is generally considered normal, persistent crying may indicate a more serious issue. The cry-it-out (CIO) method is a sleep training technique that involves letting a baby cry themselves to sleep without parental intervention. However, opinions vary on the appropriate age to start this method, with some sources recommending waiting until the baby is at least 4 months old, while others suggest it can be started as early as 5 to 6 weeks. It is important for parents to make an informed decision and consult with healthcare professionals to determine the best approach for their child's sleep training.
| Characteristics | Values |
|---|---|
| Cry-it-out method | A sleep-training strategy where parents prepare their baby for the night and let them cry themselves to sleep without intervention unless they need to be fed, changed, or are unsafe. |
| Best age to start the cry-it-out method | Pediatricians advise waiting until the baby is at least 16 weeks old and weighs 14 pounds. |
| Baby sleep patterns | Babies spend more time in rapid eye movement (REM) sleep than adults. REM sleep is when a baby is dreaming, also known as light sleep. |
| Reasons for crying in sleep | Hunger, sickness, teething, pain or discomfort, nightmares or night terrors, emotional distress, separation anxiety, or a change in temperature. |
| Tips to help baby stop crying and settle down | Condense the bedtime routine, ensure the temperature is between 68-72°F, provide a lovey or stuffed animal for comfort, talk calmly, rub their back, or provide comfort by nursing. |
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What You'll Learn
- Crying themselves to sleep is a sleep-training strategy known as the 'cry-it-out' method
- It is recommended that this method is not used on babies younger than 4 months old
- Crying in sleep is normal and not usually a sign of a serious problem
- Babies may cry in their sleep due to sickness, teething, or pain
- Establishing a daily routine and a nighttime sleep routine can help

Crying themselves to sleep is a sleep-training strategy known as the 'cry-it-out' method
It is not recommended to let a newborn or a 1-month-old baby cry themselves to sleep. Pediatricians advise waiting until a baby is at least 16 weeks old and weighs 14 pounds before starting sleep training, including the cry-it-out method. Before 4 months of age, a baby's circadian rhythm is still maturing, and they are working on understanding the difference between day and night. Their sleep is very disorganized, and sleep training is not only unnecessary but also ineffective.
Crying themselves to sleep is a sleep-training strategy known as the cry-it-out method. It is a non-parental involvement method where, once the baby's needs have been met (feeding, clean diaper, etc.), the baby is left to cry and settle themselves to sleep. This method aims to teach babies to self-soothe and fall asleep independently. It is important to note that the cry-it-out method is not suitable for all babies and families, and experts have mixed opinions on whether or when to use it.
The cry-it-out method can be emotionally challenging for parents, as it involves allowing babies to cry until they fall asleep. However, research suggests that it can help babies learn to fall and stay asleep on their own quickly and does not result in long-term attachment or behavioral problems. It is recommended to be consistent with the same routine every night, and most babies learn to go to sleep on their own within a week.
Some parents may find the cry-it-out method too rigid and stressful, and it is essential to consider the baby's and family's needs before choosing a sleep-training method. There are alternative approaches with varying levels of parental involvement, such as the \"pick up put down\" method, which is often a better fit for younger babies.
It is worth noting that falling asleep independently is a learned skill for babies, and it takes time and patience for them to master it. Establishing a daily routine and a nighttime sleep routine can help with a baby's sleep schedule.
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It is recommended that this method is not used on babies younger than 4 months old
It is completely normal for a 1-month-old baby to cry in their sleep. Newborns aged 1-3 months are still adjusting to life outside the womb and are unlikely to have a regular sleep schedule. They may cry out in their sleep if they are hungry, or due to teething pain, or discomfort from a cold or flu. Crying is also a sign of serious illness, so it is important to consult a doctor if crying persists.
The cry-it-out method is a sleep-training strategy where parents prepare their baby for the night and let them cry themselves to sleep without intervention. This method is recommended for babies older than 4 months, as babies younger than that do not have established sleep cycles. Before 4 months of age, a baby's circadian rhythm is still maturing, and they are working on understanding the difference between day and night. Sleep training at this stage is unnecessary and ineffective.
Pediatricians advise waiting until a baby is at least 16 weeks old and weighs 14 pounds before starting sleep training, including the cry-it-out method. The cry-it-out method teaches babies to fall asleep independently, which is a learned skill just like rolling over or crawling. However, it is important to remember that crying may be a sign of hunger, discomfort, or illness, so parents should always ensure their baby's needs are met before letting them cry it out.
There are alternative sleep-training techniques that involve more parental involvement, such as the Ferber method, which may be more suitable for younger babies. These techniques can help babies develop a regular sleep schedule while still providing comfort and support from their caregivers.
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Crying in sleep is normal and not usually a sign of a serious problem
It can be distressing to see your baby cry in their sleep, but it's important to remember that it is entirely normal and usually not a sign of anything serious. In fact, it is expected that newborns will wake up multiple times during the night to feed in the first few months of their lives. They may also cry out in their sleep to signal that they are hungry.
As babies grow and develop more ways to express themselves, crying in their sleep may be a sign that they are having a nightmare or night terror. Toddlers and older babies who cry while asleep, especially if they are moving in bed or making other sounds, may be experiencing night terrors. However, night terrors are relatively rare and usually occur in children between the ages of 4 and 12 years old.
Other reasons why your baby may be crying in their sleep include:
- They are too hot or cold.
- They need a feed or have a wet nappy.
- They are experiencing discomfort due to teething, a cold, or flu.
- They are going through a sleep regression, which can occur around the first birthday.
- They are overtired or exhausted.
If you are concerned about persistent crying in longer bursts or if you suspect that your baby is crying due to a medical issue, it is recommended to consult your doctor or health visitor.
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Babies may cry in their sleep due to sickness, teething, or pain
It is common for babies to cry in their sleep, and this is usually not a cause for concern. Babies sleep in cycles, and they transition between these cycles very quickly, spending more time in REM sleep than deep sleep. During the REM stage, babies may twitch, grunt, smile, or cry out briefly. This is a normal part of their sleep cycle.
Babies may also cry in their sleep due to sickness, teething, or pain. If your baby is sick, they may be more likely to experience night terrors, which can cause them to cry out in their sleep. Teething pain can also disturb your baby's sleep and cause them to cry. However, it is important to note that pain that causes crying will usually wake the baby. If you suspect that your baby is in pain or sick, it is recommended to talk to a pediatrician about ways to ease their discomfort.
Additionally, babies may cry in their sleep due to mild discomfort, such as gas or a bubble in their tummy. This is usually not a cause for concern, and they may quickly return to sleep without fully waking. However, if the crying becomes prolonged or is accompanied by other signs of distress, such as fever or unusual fussiness, it is advisable to reach out to your pediatrician.
It is important to establish a daily routine and a nighttime sleep routine for your baby. This can help them develop a regular sleep schedule and maximize their sleep. In most cases, crying out in sleep is not dangerous, and it is a normal part of their development. As babies grow and develop more ways to express themselves, crying while asleep may be a sign of nightmares or night terrors. Toddlers and older babies may cry in their sleep due to nightmares or night terrors, but these are relatively rare and usually occur in children aged between 4 and 12 years old.
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Establishing a daily routine and a nighttime sleep routine can help
It is not recommended to let a 1-month-old cry themselves to sleep. At this age, babies are still adjusting to life outside the womb and are working on understanding the difference between day and night. Instead, the first few months of a baby's life should be spent getting to know their needs for sleep, feeds, play, and settling.
It is important to keep a log of a baby's sleep patterns, noting the longest sleep stretch of the night. This will help caregivers understand their baby's sleep cues, such as rubbing their eyes or yawning, and enable them to put their baby to bed when they are sleepy but not overtired. Once the baby's longest sleep stretch is understood, a pre-sleep routine can be timed to start 30 to 45 minutes before this.
A nighttime sleep routine could include a story or song, and this can also be incorporated into a shorter naptime routine. It is also important to be flexible and adjust the baby's sleep schedule according to their natural rhythms.
While it is not recommended to let a 1-month-old cry themselves to sleep, the cry-it-out method is a sleep-training strategy that can be considered for babies over the age of 4 months. This method involves preparing the baby for the night and letting them cry themselves to sleep without intervention unless they need to be fed, changed, or are unsafe. It is important to remember that this method may not be suitable for all families, and there are alternative sleep-training techniques available, such as the Ferber method, which involves gradually increasing increments of checking on the baby until they fall asleep.
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Frequently asked questions
Yes, it is normal for newborns to cry in their sleep. They may be crying because they are hungry, or they could be uncomfortable due to the temperature of their surroundings. Newborns also have more sleep disturbances because they are still adjusting to life outside the womb and their nervous systems are still developing.
No, you should not let a newborn cry it out. Sleep training methods such as the cry-it-out (CIO) method are not recommended for babies under 4 months old. This is because their circadian rhythm is still maturing, and they are working on understanding the difference between day and night.
You can establish a daily routine and a nighttime sleep routine to help your baby fall asleep. Bedtime routines for newborns should be brief and include just a few activities such as changing their diaper, applying lotion, swaddling, and rocking them until they are drowsy.











































