Memories are some of the sweetest treasures we carry through life, and for our babies, they begin forming from the earliest moments. While they may not remember their first smile, the warmth of a parent’s embrace, or their first steps, these experiences shape who they become. Capturing these fleeting moments through photographs allows us to preserve their journey, but have you ever wondered how exactly these memories start to form?

The answer lies in sleep. Sleep is essential for everyone, but for babies, it plays a crucial role in memory formation and cognitive development. As parents, we marvel at how quickly our little ones learn new skills, recognise faces, and develop their understanding of the world. What many don’t realise is that much of this learning happens while they sleep.


From the moment a baby is born, their brain is rapidly developing. Every sight, sound, and experience is a new piece of information for them to absorb. However, it’s during sleep that their brain consolidates these experiences, transforming them into lasting memories.

Babies, like adults, experience sleep cycles, but they spend a much greater percentage of time in REM (Rapid Eye Movement) sleep. This stage is closely linked to memory processing and learning. Studies suggest that during REM sleep, neural connections are strengthened, helping babies retain language skills, motor functions, and emotional bonds.


Non-REM sleep, another critical stage, is when the brain processes memories—such as recognising a parent’s face or remembering a favourite toy. This stage is essential for categorising and making sense of the world around them.

Studies have found that infants who napped after being exposed to new words were more likely to remember them compared to those who stayed awake. This suggests that sleep is not just for rest; it actively strengthens neural pathways responsible for language acquisition and cognitive function.


Sleep is an unsung hero in memory formation for our little ones, helping them process new experiences and build the foundation for lifelong learning. While they sleep and form memories, parents can preserve these special moments through photography, creating a visual timeline of their journey. In the years to come, these photographs will serve as priceless reminders of the incredible growth and love experienced in those early days.

If you’d like to find out more about the importance of sleep for children or how to improve it, please visit my website, or if you’re struggling with your little one’s sleep, feel free to get in touch to see how I can help.

A huge thank you to Pav at Little Dreams St Albans for her guest blog post