The day has been full, the yawns started at teatime, and you were quietly congratulating yourself that bedtime was going to be easier tonight. And then, as if right on cue, your little one transforms. They are giggling, bouncing, climbing the sofa, or protesting with a surprising amount of energy, and the baby who was rubbing their eyes twenty minutes ago now looks like they could run a marathon. This is the wake maintenance zone at work, and it is completely normal.
If this sounds familiar, please know that you are not doing anything wrong, and your child is not being difficult. There is a very good biological reason behind that burst of energy, and once you understand it, those evenings can feel so much more manageable.
What Is the Wake Maintenance Zone?
The wake maintenance zone (sometimes called the “forbidden zone for sleep”) is a period of heightened alertness that occurs in the hours just before the body is ready to fall asleep for the night. It was first described in adult sleep research, where it is typically seen in the two to three hours before a person’s usual bedtime. During this window, it is surprisingly hard to fall asleep, even if you have been awake all day and you have been feeling increasingly more tired as the day has progressed.
To understand why, it helps to know that two systems work together to regulate our sleep:
- Sleep pressure. The longer we are awake, the more the need for sleep builds. Think of it as a tank gradually filling up throughout the day. Babies and young children fill this tank much faster than adults, which is why they need naps and earlier bedtimes.
- The body clock (circadian rhythm). This internal clock sends out an alerting signal during the day that helps us stay awake and, towards the end of the day, pushes back against that building sleep pressure. Only once this alerting signal drops away and melatonin, our sleep hormone, begins to rise do we become truly ready to sleep.
The wake maintenance zone is the moment when that alerting signal is at its strongest, just before it falls away. Sleep pressure is high, but the body clock is saying “not yet!” The result is a child who is physically tired but who looks wide awake, and sometimes wired.
Do newborns also experience the wake maintenance zone?
This is not something we see in very young babies. A newborn’s body clock is still developing, and a circadian rhythm usually begins to emerge somewhere around the three month mark. Before this, babies sleep and wake in short, irregular cycles around feeding and development, and the early evening fussiness or cluster feeding that many newborns show is a different thing altogether (you can read more in my post on cluster feeding).
As the body clock matures through the early months, and on into the toddler and preschool years, the evening second wind becomes more noticeable.
What About Overtiredness?
You may well have been told that your little one is “overtired”, and that this is why they are wired, grizzly and fighting sleep. It is one of the most common worries I hear from parents.
The key point is that no child (or adult for that matter) can become too tired to sleep. Sleep pressure keeps building for as long as we are awake, and it does not disappear because a nap was missed or bedtime was late.
What can get in the way of sleep happening is dysregulation. Sleep only arrives once the body’s stress response has quietened, so a child who is upset, frantic or on high alert will struggle to drop off however much they need to. Sometimes fatigue is what sets that stress response off in the first place, it is the stress, not the tiredness, that stands between your child and sleep.
This is the approach I follow, and it comes from Lyndsey Hookway, the paediatric nurse, IBCLC and author who developed the Holistic Sleep Coaching Programme I trained with. She explains it beautifully in her blog, The ‘overtired’ deep dive, and sums up one of its most important messages like this: “if tiredness isn’t the problem, sleep isn’t the answer.”
This is so vital for new parents to know, because tiredness is only one of the reasons a little one might find it hard to relax. Learning a new skill, changes at home, tension in the household, hunger or a busy, stimulating day can all keep a child’s stress response switched on, and no earlier bedtime or longer nap will fix that.
So what does this mean for the evening second wind? Two quite different things can look very alike.
It may be the body clock’s alerting signal if:
- The burst of energy arrives at around the same time most evenings
- Your child is bright, playful and giggly rather than distressed
- They soften and become sleepy again if helped to get the wiggles out then given a little time to calm
It may be a stress response if:
- They are upset, frantic or hard to console
- The day has been unsettled, with a missed nap, an early start or a lot going on
- They are getting more worked up, not less, the more bedtime is pushed
It can also be a bit of both, and please do not worry about getting the label exactly right. If the energy is bright and joyful, give it somewhere to go (more on that in the next section). If your child is upset, the priority is helping them feel calm and safe again, with your presence, touch and a slow, quiet pace. Once they are settled, their sleep pressure will do the rest.
Getting the Wiggles Out
If your child is in the wake maintenance zone and has energy to burn, trying to rush them into sleep can leave everyone feeling frustrated. Instead, we can work with the biology, by giving them a chance to use that energy in the late afternoon or early evening, and then gently turning things down.
Get outside if you can. Natural daylight in the afternoon supports a healthy body clock, and fresh air and movement are a wonderful combination. Even a short walk, a trip to the park or a potter around the garden can help (all easier in the lighter months of the year)
Offer lots of movement. The right kind of movement depends on age:
- Babies: Floor time and tummy time, rolling, reaching, crawling, supported standing, bouncing in your arms, gentle swaying and dancing together.
- Toddlers and preschoolers: Running, jumping, dancing, climbing, obstacle courses made from cushions, “animal walks” (bear crawls, frog jumps), and balloon or bubble chasing. One of my favourites is ‘floor is lava’ jumping from cushion to cushion!
- Heavy work: Pushing, pulling and carrying are very calming for many children. Think pushing a laundry basket, carrying the shopping in, pushing against a wall, or a good game of “pillow mountain”.
Fill their connection cup. Many children are most wired at the end of the day because they have been holding it together, and what they really need is you, connection time. Even ten minutes of undivided, child-led play can make a real difference to how they feel afterwards.
Keep the active play earlier. Aim to finish the more boisterous games a little before the wind-down begins, so that the energy has somewhere to go and there is still time to settle afterwards.
Check hunger. A hungry baby or child will often have a second wind that is partly a request for food. A feed for a younger baby or a small, balanced snack for an older child can be an important part of the evening. It is very common for breastfed babies to feed frequently in the evening as this meets the need for connection and hunger.
Take another look at the day. If this second wind is happening every evening, it may be worth looking at the whole picture. A nap that finishes late in the afternoon can lower sleep pressure and push the wake maintenance zone into bedtime, while a bedtime that sits right in the middle of the zone can mean you spend an hour or more in a bedtime battle. Sometimes, a small shift, such as a slightly earlier last nap or a bedtime that is a little later, makes a surprising difference. Every child is different, and there is no one-size-fits-all answer.
Calming Things Down and Settling for Bed
Once the wiggles have been wiggled out, it is time to help your little one’s body and brain slow down. This is where co-regulation comes in. Children cannot calm themselves down on their own; they borrow our calm. Your slow breathing, soft voice and warm presence are the most powerful sleep tools you have.
Dim the lights. Bright light, and particularly blue light from screens, can suppress melatonin. Around an hour before bed, turn down the main lights, close the curtains and switch to warm, low lamps. Try to avoid screens in this window.
Create a predictable, connected wind-down. A simple sequence that is the same most nights helps your child’s body and brain know what comes next. It does not need to be long or elaborate. It might look like: bath or wash, pyjamas, milk or a feed, a story, cuddles and a song. Children thrive on predictability, particularly sensitive children.
Slow the pace and lower your voice. Your energy tends to set the tone. Move slowly, speak softly and let the evening feel unhurried, even when you are exhausted and desperate for your own sofa time. (I know, I know.)
Use touch. Skin to skin, a baby massage, stroking their back, rocking, babywearing or a long cuddle all help lower stress hormones and soothe the nervous system. Many children also find slow, deep pressure, like firm back rubs or a snug cuddle, very settling.
Try calm, repetitive activities. Gentle songs, rhythmic rocking, a book you have read a hundred times, a bedtime story or simply lying quietly together can be wonderful ways to help a child’s body drift towards sleep.
Feed or lie with them if that works for your family. Feeding to sleep, rocking to sleep, and lying next to your child as they drift off are all normal, responsive ways to support sleep, and there is nothing wrong with them. If you are feeding, cuddling or settling your child in a way that includes sleeping near them, please make sure you are familiar with safe sleep guidance, such as the advice from The Lullaby Trust.
Respond if they protest. If your child is wide awake and not ready, it is okay to take a short break, step out of the bedroom, have a cuddle in the dim light of the living room and try again in a little while. You are not failing; you are just waiting for their body to catch up.
Expect some nights to be harder. Growth spurts, developmental leaps, illness, teething and big changes can all disrupt bedtime. Sleep is a developmental process and it is rarely linear.
A Note for Sensitive Children
If you are parenting a child who feels everything a little more intensely, you may find the evening second wind is even more pronounced; or the evening dysregulation is more common meaning that your child needs more help to wind down and a longer, more connection focused bedtime. If this sounds like your little one, you may find my post on orchid and dandelion children helpful.
The Take-Home Message
That burst of energy before bed is not a sign that your child is not tired, nor is it a sign that you are doing something wrong. It is biology, with the body clock holding the line for a little while longer before sleep arrives. When we meet it with movement followed by connection, dim lights and a calm, predictable wind-down, the second wind will pass and sleep will come.
If bedtimes are a struggle in your house and you would like some gentle, responsive support, I would love to help. You can find out more about my sleep support, or get in touch to chat about how I can support your family.