Did you know that up to 70% of newborns are considered “noisy sleepers,” often grunting and squirming through the night? Ever sat there staring at your sleeping newborn, wondering why they’re grunting and wiggling like they’re on a tiny, invisible roller coaster? Yeah, me too!
I remember those early days when every little sound my baby made felt like a full-on emergency. I even Googled things like “Is my baby okay?” in the middle of the night (spoiler: they usually are).
Turns out, a lot of this squirming and grunting is totally normal, and understanding the reasons behind it can bring some much-needed peace of mind.
You’d be amazed at how many parents lose sleep over this exact thing, but I promise, it’s usually nothing to worry about. Studies even show that these little sounds and movements are often signs of a healthy, developing baby.
In this article, I’ll share everything I’ve learned about why newborns grunt and squirm while sleeping—from normal developmental quirks to signs that something might need a closer look.
Why Do Newborns Grunt and Squirm While Sleeping?
Newborns Make Funny Noises While Sleeping
First off, let’s just say it: newborns are funny little sleepers. They grunt, squirm, and sometimes startle themselves awake with those tiny flailing arms. It’s like they’re having their own private dance party while we’re trying to figure out what’s happening.
I remember the first time I saw my baby’s face scrunch up in their sleep, followed by a loud grunt. I froze, thinking something was terribly wrong. But here’s the good news: most of the time, it’s just how babies are.
Newborn Digestive System: A Work in Progress
One big reason for all the noise? Their digestive system is still learning how to work. Newborns grunt a lot when they’re passing gas or having a bowel movement.
Their little digestive systems are immature, so it takes more effort to move things along.

Active Sleep Cycles and Baby Movements
Another reason for all the movement is their sleep cycle. Newborns spend a lot of time in something called REM sleep, which is a super active stage of sleep.
During REM, their brains are hard at work growing and developing, and that’s why they move so much and make those funny sounds.
It’s honestly incredible to think about how much their little brains are doing, even while they’re snoozing.
Irregular Breathing: What’s Normal and What’s Not
Finally, let’s talk about breathing. Newborns have irregular breathing patterns, especially in their first few weeks of life.
Sometimes, they’ll grunt as they adjust their airflow or clear their tiny airways. As long as they’re not showing signs of distress, like turning blue or struggling to breathe, this is perfectly normal.
I remember sitting there, obsessively watching my baby’s chest rise and fall because I was convinced something was off. It’s what new parents do, right?
But over time, I learned that a lot of this grunting is just their way of adapting to life outside the womb.
Studies show that up to 70% of newborns make these noises regularly during sleep, and it’s considered a healthy part of their development.

So, if your baby sounds like a tiny farm animal at night, you’re definitely not alone!
When Should the Grunting Concern You?
In most cases, grunting and squirming are nothing to worry about; they are simply your baby responding to their environment and their body – but it’s important to be aware that when combined with other symptoms, grunting can indicate there’s a problem.
Aspiration
Occasionally, grunting could indicate aspiration. This occurs when something is blocking the airway, such as the infant failing to swallow properly, or bringing up milk and choking on it.
Aspiration may result in coughing, wet-sounding breathing, wheezing, and repeated lung infections.
In fact, studies suggest that aspiration is a leading cause of respiratory complications in infants, affecting around 1-2% of newborns in certain populations.
Respiratory Issues
Sometimes, raspy breathing may indicate that your child has a respiratory issue. Some concerning symptoms include:
- Rhythmic grunting while breathing
- A whistling sound while your baby breathes out
- Fast breathing (more than 40 breaths per minute)
- An extra-long exhalation
Seek a doctor’s advice immediately if you are concerned about respiratory infections or problems.
Sepsis
Sepsis in babies is usually caused by bacteria (or sometimes by fungi or viruses). It can be hard to identify, so look out for the following symptoms in your baby:
- Being heavily asleep
- Breathing very fast
- Feeling cold
- Mottled, blue, or pale skin
- Convulsions or fits
- A rash that doesn’t fade when pressed
Here’s a surprising fact: Sepsis affects around 1 in every 1,000 live births in developed countries. While rare, it’s crucial to act quickly if you suspect it.
Meningitis
Grunting while sleeping is a common symptom of meningitis in a baby. Listen for particularly high-pitched grunting and constant moaning, and look out for:
- Blotchy or red skin
- Blue, gray, or pale skin
- Fast, slow, or labored breathing
- Fever or coldness
- Listlessness, floppiness
- Stiff body or jerky limbs
- Very heavy sleep
Get immediate medical assistance if you think your baby has meningitis (also referred to as GBS).
Heart Failure
In some cases, grunting can indicate heart failure. This is usually accompanied by other symptoms, including:
- Sweating
- Shortness of breath
- Lung congestion and coughing
- Lack of weight gain
- Extreme tiredness, constantly falling asleep during feeds
If these concerns are overwhelming, don’t worry—there are practical steps you can try to ease your baby’s discomfort. Here are some tips to help your little one (and you!) rest easier.

Tips to Soothe a Squirmy, Grunting Newborn
So, what can you do to make your baby (and yourself) more comfortable? Here are a few tips that worked wonders for me:
- Burp them often: This might seem obvious, but I can’t tell you how many times I forgot to do it in those early days. A quick burp after feeding can help release trapped air and reduce gas-related grunting. And sometimes, that burp comes with a little spit-up—so keep a burp cloth handy!
- Adjust their sleep position: Placing your baby on their back is safest, but you can slightly elevate the head of their crib (using something like a wedge under the mattress) to help with digestion and breathing. Just don’t overdo it; too much incline isn’t safe.
- Try a tummy massage: Gently massaging your baby’s tummy in a clockwise motion can help relieve gas and ease their squirming. I was skeptical at first, but it really does work! Combine it with some “bicycle legs” for extra relief.
- Use white noise: Sometimes, the extra sounds around them can startle newborns. A good white noise machine can help drown out distractions and keep them calm.My baby loved the sound of ocean waves, but every baby is different.
- Swaddle them: If squirming is waking them up, a snug swaddle can make them feel secure and reduce those flailing movements. Just be sure it’s done safely. I once swaddled too tightly and learned the hard way—so leave a little room for those hips to move!
Common Myths About Newborn Sleep You Should Ignore
Let’s bust a few myths while we’re at it:
- Myth: “Grunting means they’re in pain.”
Reality: Not usually! Most of the time, it’s just them working through gas or adjusting to sleep cycles. - Myth: “You need to wake them up to stop the grunting.”
Reality: Nope. Interrupting their sleep usually does more harm than good. Let them work it out on their own unless they’re showing signs of distress. - Myth: “Squirming means they’re waking up.”
Reality: Newborns move a lot during active sleep, but it doesn’t mean they’re awake. Give them a moment to settle before intervening.
Another myth I heard was that “noisy sleepers don’t need monitoring.” But trust me, keeping an eye (or ear) on them is part of the job. Balance it with not hovering too much, though. It’s a learning curve for sure!
Conclusion
Having a newborn is a wild ride, and their sleep habits can leave you scratching your head (or Googling at 2 a.m.). But knowing that Why Newborn Is Grunting and Squirming While Sleeping? are often just a part of their normal development can make those nights a little easier.
Remember to keep an eye out for red flags, but don’t sweat the small stuff—you’re doing great!
If you have any tips or funny stories about your baby’s sleep habits, drop them in the comments below.
Let’s help each other get through this one grunt at a time! And hey, if this helped, maybe share it with another sleep-deprived parent who could use some reassurance.