When Can Babies Sleep on Their Stomach? Safe Sleep Explained
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Place your baby on their back at the beginning of every sleep—naps and nighttime—through the first year of life.
If your baby can independently roll from back to stomach and from stomach back to back, you generally do not need to repeatedly turn the baby over if they roll onto their stomach during sleep.
Even after your baby can roll both ways, continue placing the baby on the back at the start of every sleep and keep the sleep space firm, flat and completely free of pillows, blankets, stuffed animals, bumpers and other soft objects.
- Place every infant on the back to begin every sleep until age 1.
- Do not intentionally put a young infant on the stomach to sleep.
- Side sleeping is not recommended.
- If your baby independently rolls both ways, you may generally leave the baby in the position they choose.
- Continue starting every sleep on the back even after rolling begins.
- Stop swaddling as soon as your baby shows signs of trying to roll.
- Keep the sleep surface firm, flat, noninclined and free of soft objects.
- Routine infant reflux is not a reason to use stomach sleeping.
Why Is Back Sleeping Recommended?
Back sleeping is one of the most important recommendations in infant sleep safety.
Sleeping on the stomach is associated with a higher risk of sudden infant death syndrome and other sleep-related infant deaths.
For that reason, the American Academy of Pediatrics recommends placing infants completely on their backs for every sleep until 1 year of age.
That recommendation applies to nighttime sleep and naps, and it applies regardless of which caregiver is putting the baby to sleep.
Consistency matters. A baby who usually sleeps on the back should not be intentionally placed on the stomach for a nap simply because another caregiver believes the baby sleeps better that way.
Is Side Sleeping Safe?
No.
Side sleeping is not considered a safe alternative to back sleeping.
The side position is less stable, and a baby placed on the side can more easily roll onto the stomach.
The recommended starting position is fully on the back.
What if My Baby Rolls Onto Their Stomach While Sleeping?
This is where many parents become understandably nervous.
You carefully place your baby on the back, check again later and discover your baby sleeping peacefully on the stomach.
Do you need to turn the baby back over?
If your baby can independently roll from back to stomach and from stomach to back, AAP guidance says you may allow your baby to remain in the position they assume.
You do not need to spend the entire night repeatedly turning a baby who can freely roll in both directions.
You choose the starting position. Your rolling baby may choose the final position.
Place your baby on the back every time you put the baby down to sleep.
Once a baby who can independently roll both ways changes position without your help, you can generally allow the baby to remain there.
What if My Baby Can Roll Onto the Stomach but Cannot Roll Back?
Babies do not always learn both directions of rolling at exactly the same time.
Some first learn to roll from the back onto the stomach and take longer to master the return trip.
The AAP's parent guidance specifically says a baby may remain in the position they assume when the baby can roll independently from tummy to back and from back to tummy.
If your baby has only recently learned to roll one way, continue starting every sleep on the back and keep the sleep space completely clear.
If you notice your baby on the stomach before the baby can reliably roll back, you can return the baby to the back.
Once rolling is established in both directions, repeated repositioning throughout the night is generally unnecessary.
When Do Babies Start Rolling?
There is no exact age when every baby begins rolling.
Many infants begin working on rolling during the middle of the first year, and some show early attempts around 3 to 4 months or even sooner.
Development varies considerably from baby to baby.
For safe-sleep decisions—especially swaddling—it is more useful to watch what your baby is actually beginning to do than to rely on a particular age on the calendar.
Stop Swaddling When Your Baby Starts Trying to Roll
This is an important safety transition.
A swaddled baby who rolls onto the stomach may not have free use of the arms and upper body to help reposition.
The AAP therefore recommends stopping swaddling as soon as an infant shows signs of attempting to roll.
You do not need to wait until your baby is routinely rolling onto the stomach.
Once your baby begins showing signs of trying to roll, it is time to stop swaddling.
Weighted swaddles and other weighted sleep products should not be used for infant sleep.
Should I Use a Sleep Positioner to Keep My Baby on Their Back?
No.
Do not place wedges, pillows, rolled blankets, rolled towels or commercial sleep positioners around your baby to prevent rolling.
Those objects can create suffocation, entrapment and airway hazards of their own.
The safer approach is a firm, flat, noninclined sleep surface covered by a fitted sheet, with nothing else around the baby.
What Should Be in the Crib or Bassinet?
Very little.
Your baby's sleep area should contain:
- A safety-approved infant sleep product
- A firm, flat mattress designed for that product
- A properly fitted sheet
- Your baby
Keep loose blankets, pillows, stuffed animals, bumpers, mattress toppers, positioners and other soft objects out of the infant sleep area.
This becomes even more important when a baby becomes mobile. A rolling baby can move toward objects that previously seemed safely out of reach.
What if My Baby Sleeps Better on Their Stomach?
Some babies do appear to sleep more deeply or for longer periods on their stomachs.
That does not make stomach sleeping safer.
The reason parents are advised to use the back position is not simply comfort—it is reduction of sleep-related risk.
Do not intentionally place an infant on the stomach because the baby seems to sleep longer that way.
Continue beginning every sleep on the back.
What if My Baby Has Reflux?
Parents commonly worry that a baby who spits up could choke while sleeping on the back.
For healthy infants, this concern does not justify stomach sleeping.
The AAP states that the back position on a flat, noninclined sleep surface does not increase the risk of choking or aspiration, including in infants with routine gastroesophageal reflux.
Infant airway anatomy and protective reflexes help protect the airway when babies spit up.
Some uncommon medical circumstances may require individualized guidance.
If a physician caring for your baby has given you specific positioning instructions because of a significant medical condition, follow that individualized medical plan.
Routine infant reflux alone is not a reason to use stomach sleeping.
What About Tummy Time?
Tummy time is important—but tummy time and tummy sleeping are not the same thing.
Tummy time is for when your baby is awake and being directly supervised.
Time on the stomach while awake helps strengthen the neck, shoulders and upper body and supports motor development.
AAP guidance encourages supervised tummy time beginning early in infancy and gradually increasing as the baby grows.
When your baby is going to sleep, return to the back position.
Back to sleep. Tummy to play.
Those two simple ideas eliminate a lot of confusion.
Your baby benefits from supervised time on the stomach while awake—but every sleep should begin on the back.
Do I Need to Watch My Rolling Baby All Night?
No.
Once your baby can confidently roll from back to stomach and stomach back to back, you do not need to stand over the crib repeatedly repositioning the baby.
Instead, focus on the parts of the sleep environment you can control.
- Begin every sleep on the back.
- Use a firm, flat, noninclined sleep surface.
- Keep the sleep area empty.
- Stop swaddling once rolling attempts begin.
- Keep loose bedding and soft objects away from the baby.
Once a baby can freely roll both directions, the baby can generally remain in the position reached independently.
Does a Baby Monitor Make Stomach Sleeping Safer?
No.
Video monitors and consumer breathing or oxygen monitors do not replace safe-sleep recommendations.
The AAP specifically notes that home cardiorespiratory monitors should not be used as a strategy to reduce the risk of SIDS.
Even if you are watching your baby on a camera, continue following safe-sleep practices.
When Should I Call My Pediatrician?
Talk with your pediatrician if:
- Your baby has unusual difficulty turning the head or moving the body.
- Your baby previously rolled normally but appears to lose that ability.
- You are uncertain whether your baby can reliably roll in both directions.
- Your baby has significant reflux, airway problems, low muscle tone or another medical condition that raises sleep-position questions.
- Your baby has persistent loud snoring or labored breathing.
- You notice repeated pauses in breathing.
- You have received conflicting advice about your baby's sleep position.
When Is It an Emergency?
Seek emergency medical attention if your baby has severe difficulty breathing, turns blue or gray, becomes limp or unresponsive, has a prolonged pause in breathing, or cannot be awakened normally.
If your baby is unresponsive or not breathing normally, call emergency services immediately.
Frequently Asked Questions
At what age can I put my baby to sleep on their stomach?
During the first year, continue placing your baby on the back at the beginning of every sleep. There is not a younger age when parents should intentionally switch to placing an infant on the stomach for sleep.
What if my 4-month-old rolls onto their stomach?
Continue placing your baby on the back at the start of every sleep. If your baby can reliably roll both back-to-stomach and stomach-to-back independently, the baby may generally remain in the position assumed. Stop swaddling as soon as rolling attempts begin.
What if my 6-month-old sleeps on their stomach?
If your 6-month-old can independently roll in both directions, you generally do not need to repeatedly turn the baby back over after the baby rolls independently. Continue beginning every sleep on the back.
Should I flip my baby over every time they roll onto the stomach?
Once your baby can reliably roll both ways, repeated repositioning is generally unnecessary. If the baby cannot yet roll from stomach to back, return the baby to the back when you notice the position and discuss concerns with your pediatrician.
Is side sleeping safer than stomach sleeping?
No. Side sleeping is not recommended because the position is unstable and makes it easier for a baby to roll onto the stomach.
Can a baby with reflux sleep on the stomach?
Routine infant reflux is not a reason to use stomach sleeping. The AAP recommends the back position on a firm, flat, noninclined surface even for infants with gastroesophageal reflux, unless the baby's medical team has provided individualized instructions for an unusual medical condition.
When should I stop swaddling?
Stop swaddling as soon as your baby shows signs of trying to roll. Do not wait until the baby is regularly completing a full roll.
Can I use a positioner to stop my baby from rolling?
No. Do not use pillows, wedges, rolled blankets or sleep positioners to hold your baby in place. Keep the sleep area clear.
Dr. G's Pearl
Once babies learn to roll, parents sometimes feel as though they need to spend the entire night flipping them back over.
You don't.
Your responsibility is to create the safest starting point: put your baby on the back, keep the mattress firm and flat, remove everything unnecessary from the sleep space and stop swaddling when rolling begins.
Once your baby can freely roll both directions, the baby can generally choose the position they settle into.
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References
- American Academy of Pediatrics. Sleep-Related Infant Deaths: Updated 2022 Recommendations for Reducing Infant Deaths in the Sleep Environment. Pediatrics. 2022;150(1):e2022057990.
- Moon RY, Carlin RF, Hand I; AAP Task Force on Sudden Infant Death Syndrome and AAP Committee on Fetus and Newborn. Evidence Base for 2022 Updated Recommendations for a Safe Infant Sleeping Environment to Reduce the Risk of Sleep-Related Infant Deaths. Pediatrics. 2022;150(1):e2022057991.
- American Academy of Pediatrics. Safe Sleep and Your Baby: How Parents Can Reduce the Risk of SIDS and Suffocation.
- American Academy of Pediatrics. Safe Sleep.
- American Academy of Pediatrics / HealthyChildren.org. Putting Back-Sleeping Concerns to Rest.
Related Parent Resources
Explore more pediatric guidance about infant sleep, safe sleep, rolling and nighttime concerns in the Pediatric Parent Guide Sleep Library .