Why the first 1000 days (really) matter

A woman sitting on a sofa with a soft toy and playfully popping bubbles in the air.
Why the first 1000 days matter for your baby’s brain, development and connection, with insights from a paediatric occupational therapy team.

Words by Motivate Kids, a South Australian paediatric occupational therapy team.

You may have heard the phrase “the first 1000 days”, but what does it actually mean for your baby, and for you as a parent? In simple terms? A lot is happening. Very quickly.

From day one of pregnancy through to your child’s second birthday, your baby’s brain is growing at a pace it will never quite match again. By the age of three, it’s already reached around 80% of its adult size.

The first 1000 days aren’t about perfection. They’re about presence.

During this window, the brain is highly neuroplastic, meaning it is shaped by experience. It can sound like a lot to carry – but it’s far more about presence than perfection.

Think of your baby’s brain like a (very cute!) sponge. Every cuddle, wriggle, stretch, smile, song, tummy-time attempt and peekaboo giggle is being soaked up, building the architecture for learning, emotional regulation, communication and relationships later on.

When we talk about early development, it’s easy to assume it means more toys or structured activities. But research tells us something reassuring: what matters most is far simpler. Warm, responsive relationships. Feeling safe and connected. Opportunities to move, play and explore. The ordinary, repeated, loving interactions of daily life.

A nappy change with shared eye contact. Singing in the car. Lying on the floor together.

When babies feel safe, seen and connected, their nervous system begins to organise. From that foundation, they are better able to attend, move, communicate and explore with confidence.

The first 1000 days aren’t about perfection. They’re about presence. And if you’re ever unsure, it’s okay to seek guidance. Parenting was never meant to be done alone.

Motivate Kids supports children from infancy through to young adulthood, nurturing child development, wellbeing and performance.


Motivate Kids
162 Hampstead Road, Broadview
motivatekids.com.au | @motivatekids

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