10 Reasons Your Baby Wakes Up at Night (It's Biologically Normal!)

As a mom, there’s nothing quite as challenging as waking up multiple times a night to tend to your baby. It’s exhausting, disorienting, and can leave you questioning whether something is wrong. But let me assure you, frequent night wakings are biologically normal for babies. Understanding why this happens and learning how to navigate these nights with compassion and practical strategies can make all the difference for both you and your little one. You are not alone in this journey, and what you’re experiencing is a reflection of your baby’s natural needs, not a sign that you’re doing something wrong.

IN THIS ARTICLE

Why Babies Wake Frequently at Night
What to Do About Your Baby’s Frequent Night Wakings
Good Luck, Mama

Let’s explore some potential reasons for these nighttime awakenings and gentle strategies to help your little one—and you—achieve more restful sleep.

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Why Babies Wake Frequently at Night

Why do babies wake frequently at night? They’re designed to!

Babies are born with immature sleep cycles and natural biological rhythms that are very different than an adult’s. Night wakings are an essential part of your baby’s growth and development and ensure their survival in the world outside the womb. Here are some reasons why your baby may wake frequently:

Babies Have Short Sleep Cycles

Newborns and young infants have much shorter sleep cycles compared to adults. Their cycles, lasting around 45-60 minutes, include a higher proportion of light sleep. This is by design… their light sleep state is a protective mechanism that allows them to wake easily if they need to feed, be comforted, or adjust their breathing. It might be frustrating or exhausting, but your baby’s night wakings are a survival mechanism designed to protect them.

Babies Get Hungry Around the Clock

Babies have tiny stomachs that require frequent feeding, especially in the early months. Night wakings ensure they receive the calories needed for rapid growth and brain development. Even older babies may wake for feeds as they navigate growth spurts or increased activity during the day. If your baby is waking multiple times through the night and is consuming a full feeding, you can rest assured that they’re simply hungry (compared to them simply snacking or comfort nursing).

Babies Wake at Night for Bonding and Attachment

Night wakings allow your baby to seek comfort and reassurance from their caregiver. These nighttime moments help foster a sense of security, which is crucial for your baby’s emotional development and secure attachment. Babies instinctively know that calling out for you ensures their safety and connection, which is why we always want to make sure we respond to them and meet their needs.

Regulating Temperature and Breathing

Waking frequently at night helps babies regulate their body temperature and breathing. Their systems are still maturing, and these wake-ups serve as natural safety mechanisms, reducing the risk of conditions like SUID. Be sure to keep your baby’s room temperature a safe 68-72° F (20-22.2° C) and dress them appropriately.

I strongly prefer natural fibers like cotton and cotton fleece to synthetic fabrics because natural fibers are breathable while synthetic fabrics are not. Some babies run hotter than others, and it’s important to be mindful of their body’s inability to regulate temperature well.

Babies Wake When They Need a Diaper Change

A wet or soiled diaper can be uncomfortable for your baby, waking them up at night. Sensitive skin can feel irritated, and some babies simply don’t like the feeling of a wet diaper (who really would?) or a diaper leak, so they alert you when they need a change. Usually, you can get to know your baby’s pooping schedule and start anticipating when they will need a diaper change overnight.

Developmental Milestones Cause Nighttime Wakeups

Have you ever heard of a leap? It’s when your baby is growing or advancing developmentally, and that could cause some disruption to their sleep. Your baby could be waking due to the exciting developments happening in their body. Learning new skills like rolling, sitting, crawling, or even babbling can temporarily disrupt sleep. These changes can make it harder for babies to settle, as their brains are busy processing new information. It’s a sign of growth, even if it means more wakings.

Some Newborns Wake at Night Due to Day/Night Confusion

Newborns often have their days and nights mixed up because their circadian rhythm (internal clock) is still developing. In the womb, they were used to sleeping during the day when you were active and your movement lulled them to sleep, while being more active at night (remember those nighttime kicking sessions?).

After birth, it can take a few weeks for newborns to adjust to the natural cycle of daylight and darkness, leading to more frequent waking at night and longer stretches of sleep during the day.

Sickness or Teething Discomfort Can Cause Excess Night-Waking

As teeth begin to emerge, or when your baby isn’t feeling well, the associated discomfort can cause frequent wakings. Your baby might need extra cuddles and soothing during these phases to help them feel comfortable enough to return to sleep. (I do have a helpful guide on teething hacks if you are in the middle of this!)

Overstimulation or Overtiredness

Sometimes, babies wake frequently because they’ve become overtired or overstimulated during the day. This can make it harder for them to settle into deep, restorative sleep at night. Be sure to not to keep your baby awake longer than they can handle, and pay attention to your baby’s sleep cues to know when to put them down for a nap or for bedtime.

Digestive Issues or Other Physical Discomforts

Babies with reflux or constipation or other digestive issues may experience discomfort when lying down, causing them to wake up more frequently. Their immature digestive systems can make it harder for them to stay comfortable, especially after feedings. For these babies, sleep is often the hardest but you can do things like temporarily removing dairy from your diet.

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What to Do About Your Baby’s Frequent Night Wakings

Now that we’ve established that night wakings are biologically normal, I hope it gives you a sense of understanding and peace about why your baby is acting normally and in line with their physiological design. However, let’s be honest that it still doesn’t make them any less challenging.

So, what can you do about your baby’s frequent night wakings? Thankfully, a lot…

1. Establish a Consistent Bedtime Routine

Babies thrive on predictability. How else could they make sense of their new world?

A calming and consistent bedtime routine can signal your baby that it’s time to wind down. This might include a warm bath, gentle massage, reading a bedtime story, or singing your baby a sweet lullaby. Consistency helps your baby associate these activities with sleep, encouraging longer and more restful sleep.

2. Monitor and Adjust the Sleep Environment

The sleep environment plays a crucial role in your baby’s ability to stay asleep. Ensure the room is at a comfortable temperature—not too hot or too cold. Overheating or feeling chilly can cause discomfort, leading to frequent awakenings.

Additionally, consider using blackout curtains to keep the room dark and a white noise machine to mask household noises, creating a soothing atmosphere conducive to sleep.

3. Address Potential Discomforts

Physical discomforts such as teething, gas, reflux, oral ties, or mild illnesses can disrupt your baby’s sleep. If your baby shows signs of discomfort, like pulling at their ears (which could indicate an ear infection) or excessive drooling and chewing (common during teething), it’s essential to address these issues.

Consulting with your pediatrician, pediatric chiropractor, pediatric gastroenterologist, functional dentist/oral ties provider, or functional provider can help alleviate these discomforts, helping your baby sleep better without these disruptions.

4. Consider Developmental Milestones

Babies often experience sleep disruptions during significant developmental milestones, such as learning to crawl or walk. These phases are temporary, and maintaining a consistent routine can help your baby return to better sleep patterns once the milestone is achieved. Usually, this isn’t the time to completely change up your sleep routine because these developmental phases are just phases.

5. Adjust the Sleep Routine

Sometimes, frequent night wakings can be a sign that your baby is ready to adjust or drop a nap. As babies grow, their sleep needs evolve, and holding onto too many daytime naps or napping too close to bedtime can interfere with nighttime sleep. If your baby is suddenly waking more often or struggling to fall asleep at night, it might be time to evaluate their nap schedule and consider lengthening wake windows or dropping a nap to help them settle better at night.

Be sure to reference your baby’s age-appropriate wake windows and stay attuned to your baby’s sleep cues.

6. Practice Patience and Seek Support

Remember, frequent night awakenings are totally common and biologically normal, and often resolve with time. I promise that this is a phase, although it can be a very long one, I know.

Practicing patience and maintaining a consistent, loving approach to your baby’s sleep routine is key. If sleep challenges persist, consider getting additional holistic sleep support (use code GENTLESLEEP) for personalized guidance tailored to your family’s needs.

Good Luck, Mama

I know that sleep is one of the hardest challenges of new motherhood, and it seems like things are always changing once you’ve figured them out. But knowing that your baby’s behavior is biologically normal and functional (i.e. it happens for a reason), I hope this gives you the insight to approach this with a fresh perspective. And by understanding and addressing any potential reasons that are within your control with empathy and consistency, you can help your baby develop healthier sleep habits and get on the path toward better sleep.

As always, you’re not alone in this journey, and I’m happy to see that you’re working on your baby’s sleep needs with a gentle and loving approach.

10 Reasons Your Baby Keeps Waking Up At Night (Hint: It’s Biologically Normal)