We spend roughly a third of our lives asleep. Developing healthy sleep habits genuinely supports a healthy, thriving life, and every child needs good sleep for healthy growth and development. Let’s look at the science behind why sleep matters so much, and ten practical healthy sleep habits that help.
Why do we actually sleep?
Surprisingly, there isn’t one single agreed reason, sleep science is still evolving. Dr Rebecca Robbins, a sleep researcher at Harvard Medical School, points to several likely functions working together. Recovery, genuine rest for the body, cell growth, and physical repair. Protection, an evolutionary holdover, staying still and quiet reduced the risk of predators finding us. Memory consolidation, forming and strengthening long-term memories, and locking in learning from the day. Sleep isn’t the passive, inactive state we once assumed, the brain and body are genuinely active throughout.
What’s actually happening in the body
The cardiovascular system gets a real break during sleep. Research has found that people with normal or high blood pressure typically see their blood pressure drop by 20 to 30 percent, and heart rate by 10 to 20 percent, during sleep. Growth hormone is released during deep sleep too, which matters enormously for children specifically, this is genuinely when a lot of physical development happens.
Two systems work together to govern when we sleep: our circadian rhythm, a roughly 24-hour internal clock, and something called the homeostatic sleep drive, essentially built-up “sleep pressure” the longer we’ve been awake. We’re not born with a fully working circadian rhythm, it develops over the early months and years, and it’s regulated by melatonin, the hormone that signals to the body it’s time to sleep.
Melatonin production depends heavily on light. Exposure to light during the day, especially in the morning, actually helps increase melatonin production later that night. Exposure to light in the evening does the opposite, suppressing it. This is exactly why blue light from screens in the evening is worth taking seriously, avoiding screens in the hour before bed is one of the simplest, most effective changes you can make.
A note on my free sleep guide
If you’d like more, healthy sleep habits all in one place, alongside the deeper story of how sleep has evolved. And why our bodies are built the way they are around it, my free guide When Darkness Comes covers exactly this, the science, the evolution of sleep, and practical support for anxious or difficult bedtimes too.
Ten healthy sleep habits
1. Keep a consistent bedtime and wake time, including weekends where you can. Consistency is what actually trains the body clock.
2. Get morning light exposure, outside if possible, within the first hour or so of waking. This genuinely helps set the circadian rhythm for the day ahead.
3. Keep the bedroom for sleep only, where possible, rather than play, homework, or screen time, so the brain associates the space itself with rest.
4. Wind down properly before bed, a calm, predictable routine signals to the body that sleep is coming.
A note on sleep cues
Beyond the routine itself, specific sleep cues, repeated the same way each night, help your child’s body learn to recognise that sleep is coming. Something calm like colouring, a warm bath, and a story, done in the same order each night, become a signal in themselves. Over time, the body starts to physically respond to these cues, winding down before you even reach the final goodnight, because the sequence itself has become associated with sleep.
5. Limit screens in the hour before bed, for the melatonin reasons above.
6. Keep the room dark, cool, and quiet, all genuinely support deeper sleep.
7. Watch caffeine and sugar, particularly in the afternoon and evening, both can disrupt sleep more than people expect.
8. Build in physical activity during the day, movement genuinely supports better sleep at night, though ideally not too close to bedtime.
9. Notice and address anxiety or fear around sleep directly, rather than hoping it settles on its own. My blog Understanding the Link Between Sleep Problems and Nighttime Fears goes into this properly.
10. Support genuine self-soothing, the ability to settle without needing you there every single time, is one of the most valuable sleep skills a child can build. My blog The Importance of Self-Soothing for Sleep covers this in depth.
Interested in working with me?
If you would like more tailored support for your child’s sleep, I offer sleep consultations alongside one to one therapy for children and young people and therapeutic parenting support for parents. Please do get in touch if you would like to find out more.
You can reach me via my contact page.
Free resources
Understanding Your Child’s Guard Dog Brain explains what is happening in your child’s nervous system when big feelings take over.
Holding in the Storm is about staying steady as a parent in the hard moments.
When Darkness Comes is my full guide dedicated to helping your child sleep, including support for anxiety and nighttime fears.
All free to download.
Related reading
The Importance of Self-Soothing for Sleep
Why Won’t My Child Sleep? Understanding Insomnia and What Actually Helps
Understanding the Link Between Sleep Problems and Nighttime Fears
Six Health Concerns That May Impact Your Child’s Sleep
References
Robbins, R. Harvard Medical School and Brigham and Women’s Hospital, sleep science research.
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With warmth,
Catherine
