My Baby Moans in Their Sleep
Medically reviewed by Dr. Sarah Chen, MD, FAAP · Board-Certified Pediatrician
Content reviewed against published AAP, NSF, Cleveland Clinic guidelines
Last reviewed:
Sleep concerns affect nearly every family at some point. When it comes to moans in their sleep, here is what the guidelines recommend.
The short answer
Moaning, groaning, and grunting during sleep are extremely common in babies and are almost always harmless. Babies spend a large proportion of their sleep in active (REM) sleep, during which they naturally vocalize, twitch, and make facial expressions. These sounds typically decrease as your baby's nervous system matures over the first few months.
Key takeaways
- Moaning, groaning, and grunting during sleep are extremely common in babies and are almost always harmless. Babies spend a large proportion of their sleep in active (REM) sleep, during which they naturally vocalize, twitch, and make facial expressions. These sounds typically decrease as your baby's nervous system matures over the first few months.
- Usually normal when: The moaning occurs during sleep and your baby does not fully wake up
- Call your doctor if: Your baby's moaning is accompanied by pauses in breathing, gasping, or color changes (blue or gray around the lips)
- Varies by age — see the age-by-age breakdown below
“To reduce the risk of sleep-related infant deaths, the AAP recommends that infants sleep on their backs, on a firm, flat surface, without any soft bedding.”
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What Parents Should Know
According to AAP, NSF, Cleveland Clinic guidelines, moaning, groaning, and grunting during sleep are extremely common in babies and are almost always harmless. Babies spend a large proportion of their sleep in active (REM) sleep, during which they naturally vocalize, twitch, and make facial expressions. These sounds typically decrease as your baby's nervous system matures over the first few months. At 0-3 months, newborns are famously noisy sleepers. They spend about 50% of their sleep time in active REM sleep - far more than adults - and during these phases they commonly moan, grunt, squeak, sigh, and even whimper without being awake or in distress. Their breathing patterns are also irregular during REM sleep, which can add to the overall noisiness. This is a normal part of neurological development and is not a sign of pain or discomfort. It is generally considered normal when the moaning occurs during sleep and your baby does not fully wake up. However, you should contact your pediatrician promptly if your baby's moaning is accompanied by pauses in breathing, gasping, or color changes (blue or gray around the lips).
Normal vs. Concerning
By Age
What to expect by age
0-3 months
Newborns are famously noisy sleepers. They spend about 50% of their sleep time in active REM sleep - far more than adults - and during these phases they commonly moan, grunt, squeak, sigh, and even whimper without being awake or in distress. Their breathing patterns are also irregular during REM sleep, which can add to the overall noisiness. This is a normal part of neurological development and is not a sign of pain or discomfort.
3-6 months
As your baby's sleep architecture matures, the proportion of active sleep decreases and sleep sounds usually become less frequent. Some babies continue to moan softly during transitions between sleep cycles, which occur roughly every 40-50 minutes. If the moaning is brief and your baby does not fully wake, there is no cause for concern.
6-12 months
Occasional moaning during sleep at this age is still within normal range, especially during periods of teething, illness, or developmental leaps. If your baby starts moaning more than usual, consider whether they might be uncomfortable from a stuffy nose, teething pain, or room temperature. A brief check is fine, but avoid picking them up immediately - they may resettle on their own.
12-24 months
Toddlers may moan during deep sleep transitions or when processing new experiences from the day. If moaning is accompanied by teeth grinding (bruxism), this is also very common in toddlers and usually resolves on its own. Persistent, loud moaning every night that seems to disturb your toddler's sleep quality is worth mentioning at your next well-child visit.
What to Tell Your Pediatrician
- Describe when you first noticed moans in their sleep and how it has changed over time.
- Note your baby's current age and which age-specific patterns you are seeing.
- Mention if the moaning is accompanied by consistent loud snoring or mouth breathing during sleep.
- Mention if your baby seems to strain or turn red while moaning, which could suggest reflux or grunting baby syndrome.
- Bring a list of any questions or observations you want to discuss at the appointment.
What Should You Do?
When to take action
- The moaning occurs during sleep and your baby does not fully wake up
- Your baby is otherwise sleeping well, gaining weight, and developing normally
- The sounds are intermittent and vary in type - moans mixed with sighs, grunts, and squeaks
- Your baby appears relaxed and comfortable, not tense or arching
- The moaning is accompanied by consistent loud snoring or mouth breathing during sleep
- Your baby seems to strain or turn red while moaning, which could suggest reflux or grunting baby syndrome
- The moaning has increased significantly and your baby seems more tired or irritable during the day
- Your baby's moaning is accompanied by pauses in breathing, gasping, or color changes (blue or gray around the lips)
- Your baby is moaning with a high fever, stiff body, or seems to be in significant pain and cannot be consoled when woken
What You Can Do at Home
- Keep track of when you notice moans in their sleep — noting the time of day, duration, and any triggers can help your pediatrician.
- Remember that the moaning occurs during sleep and your baby does not fully wake up — this is generally within the range of normal.
- At 0-3 months, focus on observation rather than intervention unless your pediatrician advises otherwise.
- Maintain a consistent bedtime routine. Keep the sleep environment cool, dark, and quiet.
- While monitoring at home, seek immediate care if your baby's moaning is accompanied by pauses in breathing, gasping, or color changes (blue or gray around the lips).
Related Resources
Milestone Checklists by Age
Track your baby's developmental milestones from birth to 5 years with age-specific checklists.
Baby Sleep Guide
Age-by-age sleep needs, schedules, and evidence-based sleep strategies.
Month-by-Month Development
Detailed monthly development guides from birth through 24 months.
When to Call the Doctor
General guide on when to call the pediatrician, visit urgent care, or go to the ER.
Frequently asked questions
Is moans in their sleep normal?
When should I call the doctor about moans in their sleep?
When is moans in their sleep normal?
What causes moans in their sleep?
What should I mention to my pediatrician about moans in their sleep?
Is moans in their sleep normal at 0-3 months?
Is moans in their sleep normal at 3-6 months?
Should I go to the ER for moans in their sleep?
Does moans in their sleep go away on its own?
References
- [1]American Academy of Pediatrics. Getting Your Baby to Sleep. HealthyChildren.org. AAP
- [2]National Sleep Foundation. Baby Sleep Noises: What's Normal? SleepFoundation.org. NSF
- [3]Cleveland Clinic. Newborn Sleep Patterns. ClevelandClinic.org. Cleveland Clinic
Doctor Visit Checklist
Bring this checklist to your next pediatrician visit to discuss My Baby Moans in Their Sleep.
Things to mention
- Describe when you first noticed moans in their sleep and how it has changed over time.
- Note your baby's current age and which age-specific patterns you are seeing.
- Mention if the moaning is accompanied by consistent loud snoring or mouth breathing during sleep.
- Mention if your baby seems to strain or turn red while moaning, which could suggest reflux or grunting baby syndrome.
- Bring a list of any questions or observations you want to discuss at the appointment.
Observations to share
- The moaning is accompanied by consistent loud snoring or mouth breathing during sleep
- Your baby seems to strain or turn red while moaning, which could suggest reflux or grunting baby syndrome
- The moaning has increased significantly and your baby seems more tired or irritable during the day
Urgent signs to report immediately
- Your baby's moaning is accompanied by pauses in breathing, gasping, or color changes (blue or gray around the lips)
- Your baby is moaning with a high fever, stiff body, or seems to be in significant pain and cannot be consoled when woken
My notes
From ismybabyalright.com — free, evidence-based baby health guides
All content follows our editorial policy and is reviewed against published clinical guidelines.
2,705 evidence-based guides6 authoritative medical sources5 medical advisory board members
Related Resources
Bottom line
Most cases of moans in their sleep are normal. Talk to your pediatrician if your baby's moaning is accompanied by pauses in breathing, gasping, or color changes (blue or gray around the lips).
Trust your instincts. If something feels wrong, reach out to your pediatrician. Worrying about your baby means you care — that is a good thing.
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