Why Is Sleep Important?

Author Name: Heidi Holvoet, PhD

Why is sleep important? Because it makes you happy , healthy and smart. That's how I answered my son's question the other day.

And it's true, the benefits are basic and felt in our everyday lives, from newborn through adulthood.

Why is sleep important for your baby?

Happy Baby photo courtesy of a4gpa

It's no secret how important sleep is for babies.

As a parent you know how happy and sweet a baby can be after a good rest - and how cranky and fussy when tired. And how an overtired baby won't sleep easily, won't fall asleep well nor stay asleep for longer stretches.

And if your baby is well rested, you benefit too: you get more rest, which makes you feel better and keeps you healthy. And that in turn has an important positive effect on your child(ren).

But there are even more fundamental benefits :

  • Hard work is done in a newborn's brain, and proper brain development requires enough and good quality sleep.
  • When sleeping, a baby dreams most of the time. Researchers found that dreaming stimulates baby's brain and so assists in its healthy development.
  • The first half year is crucial for developing good sleeping skills. It's in these early months that baby's sleep patterns mature most quickly and the stage is set for the years to come.
  • Poor sleep in infancy has been linked to obesity, as a child and as an adult. [1]
  • Good sleep as a child also decreases the chance for general health problems and emotional difficulties like depression and anxiety.
  • An overtired baby won't sleep well. A baby who is mostly well-rested and just readily tired by bedtime, will settle much easier and have better nights as well.

If your baby is not sleeping well ...

Does that mean your child is doomed to be unhealthy and unhappy? No, of course not. What we as parents call "not sleeping well" is often just fine for an infant .

She may not be taking any naps at all or may not be sleeping through the night at 6 or at 18 months. But that can still be just fine for her and give her enough good quality rest.

What is important is that we give her the right support to go through that all important development in the first half year.

How? By guiding in a loving and determined way .

Loving means with enough attention for her needs and natural patterns. And without forcing her unnaturally (like overfeeding or certain medical sleep aids).

Determined means you don't necessarily give her all the freedom: you choose where and how she sleeps, when you put her to bed, when is play time and when is quiet time.

That gives your baby the safe and consistent environment to develop her sleeping at best.

The common problems and potential medical reasons baby won't sleep and sleeping through the night pages offer ideas and tools to get started.

If YOU are tired

Besides being tired and sleepy, the first effect of sleep deprivation is nearly always emotional: we feel down , low on energy and without much confidence in what we do.

It's good to realize this and to think about it when you feel depressed after many broken nights with your baby. It's only the lack of sufficient rest doing this - it's not you not being strong enough or not trying hard enough.

Help yourself by catching up on rest as much as you can. A quick nap, an early night or even an hour or so between the last day and first night feed can work wonders. You may find a couple of simple relaxation techniques helpful too.

Also, do not hesitate to ask your partner, family or friends to help you from time to time, for example with babysitting while you nap. If you would like support you can also contact me, I'm here to help.

The answer to the Why Is Sleep Important? question is in all of the above.

The best tip I can give is to keep the importance in the back of your mind, but do not over-emphasize. Simple as it may seem, keeping a relaxed attitude will help both you and your little one get more rest.

Article Author: Heidi Holvoet, PhD - Founder, senior sleep consultant

Heidi Holvoet, PhD

Heidi Holvoet, PhD, is the founder of the Baby Sleep Advice website and movement, an award-winning author, baby & toddler sleep consultant with 15+ years experience as well as a certified lactation counselor.

Over the years, Heidi has received several awards inluding a Mom's Choice Award (MCA) and National Parenting Awards (NAPPA) for her Baby Sleep Advice website, programs and books. Also, Baby Sleep Advice was awarded "Most Trusted Infant's Sleep Solutions Company 2023" in the Benelux Enterprise Awards 2023.

Heidi continually conducts personal research and participates in continued education and in that way stays up to date with current scientific and pyschosocial infant care.

Association of Professional Sleep Consultants

She is also a member of the Association of Professional Sleep Consultants of which she was one of the earliest contributors. She obtained her PhD degree in physics at the University of Ghent in Belgium.

Heidi is passionate about helping babies and their parents sleep more and better, with her trademark approach that has been proven and praised time and again by parents worldwide to be effective and truly no-tears. Respect for you as a parent and your baby, is at the heart of Heidi's warm and kind support. Her approach always keeps in mind a baby's needs and abilities at any given age, is based on pediatric science and the most up to date knowledge in infant care and sleep science.

As well as the award-winning baby sleep programs, Heidi offers popular 1:1 consults and easy-access 30-minute SOS Sleep sessions.


[1] Sleep and physical growth in infants during the first 6 months Tikotzky L, De Marcas G, Har-Toov J. et al. - Journal of Sleep Research , 2009. doi: 10.1111/j.1365-2869.2009.00772.x.