When Sleep Stops Working

Sleep is one of the most common things women tell me that they struggle with, and interestingly

the experience of sleep isn't always the same. For some women's sleep's never been particularly

easy. Falling asleep can take time, the mind doesn't switch off quickly, or the night

never feels as restorative as it should. For others, sleep worked reasonably well for

years, and then something begins to change. The routines that once helped stop working

in the same way, and you might wake during the night or wake in the morning feeling as though

your system never fully reset. Either way, the experience can become deeply frustrating,

because sleep is supposed to be natural, it's something your body's designed to do. So

when it doesn't happen easily, the instinct's usually to try and fix it. You refine your

evening routine, you experiment with supplements, you optimize your sleep environment, and you

look for this strategy that will finally make sleep work again. But clinically, sleep disruption

is really just about sleep itself. Your ability to sleep well is influenced by several systems

in your body working together. Your nervous system, your hormonal rhythms, your metabolism,

and even the way your brain processes responsibility and stress, all influence where the sleep becomes

restorative or unreliable. And when one of those systems shifts, sleeps off in the first place you

notice it. So in today's episode, I'm exploring what it's actually happening, and sleep stops working

in the way that you expected to. We'll look at the physiology behind disrupted sleep, why these

patterns are so common and capable, high performing women, and what you can begin to do to support

your body so that sleep can stabilize again. Because when you understand what your body is communicating,

the conversation about sleep can become very different. Let's get started, shall we?

Welcome to Project Joyful, the podcast for Health Centre Leaders. Project Joyful is a space for

conversations at the intersection of leadership, health, and lived experience. Here we explore

what it means to lead and ways that honor your body, protect long-term capacity, and support a life

that feels as good on the inside as it looks on the outside. This episode is part of the biology

of leadership series. In this series, we explore leadership through your body, not as a performance

to optimise or a mind-fit effect, but as a biological experience, shake times times.

Leadership doesn't just live in decision strategies or roles. It lives in your nervous system,

and how responsibility is held, and how reliability and fear that quietly organised your body

long before your consciousness. These conversations are for leaders who are capable,

trusted and effective, and who are curious about how leadership is experienced internally,

not just how it performs externally. There's nothing you need to do as you listen,

no insight you need to apply. This is simply an invitation to understand what's been

shaping your experience of leadership beneath this campus, and what's become possible

in biology becomes a part of the conversation. Let's begin, shall we?

Sleep's one of those things that we assume should be simple, right? You go to bed,

you sleep, and you wake up, restore the next morning ready to begin again.

But for many women's sleep's really been that straightforward. More often it's something you've

had managed rather than something that simply happens. You develop routines, you become disciplined

about when you go to bed, you learn how to function well the next day, even when the night before

wasn't perfect. For a long time that approach works well enough to keep life moving. The thing

was sleep disruption, it tends to creep in slowly. Gradually your body becomes a little less

cooperative, rest feels a little less restorative, and the rhythm that once felt predictable starts

to feel slightly unreliable. And at first it's easy to explain away, right? Perhaps works been

particularly demanding, perhaps there's been more stress than usual, or perhaps use sense that

hormonal changes are beginning to play a role. So the natural response is to try harder to

dial things back in. You refine your evening routine, you experiment with supplements, you

optimize the environment in your bedroom, and you start looking for the strategy that's going to

restore the sleep that you use to rely on. And sometimes those things help for a while.

Yet clinically disrupted sleep is really about a lack of effort. More often it's your body

communicating that something in the underlying physiology is shifted. Or most change, nervous system

patterns evolve, and the accumulated load of responsibility begins to register in ways your

system can no longer override. So when sleep begins to shift, most women notice that it shows up

in patterns, not waste dramatic problems, but recognizable experiences that keep repeating

night after night. So for some woman, the hardest part is still getting to sleep in the first

place. You go to bed, knowing you're tired, your mind refuses to settle. Your body feels

ready for rest yet. Brain continues to cycle through ideas, conversations, tomorrow's responsibilities,

or things you suddenly remember you forgot to do earlier in the day.

For others, falling asleep isn't the issue at all. You drift off reasonably easily, but your

body wakes you in the early hours of the morning, and your mind suddenly fully alert. Two or three

o'clock arrives, and instead of sleeping, you're wide awake, mentally reviewing decisions,

planning the next day, replaying the conversation that already happened, feeling frustrated that there's

only three hours before your alarm clock's going to go off. And then there's the experience of

fragmented sleep. So you might technically sleep through the night, but the sleep itself feels

thin. Almost as though your system never fully drops into deep rest. You wake in the morning

feeling strangely depleted, like the night passed, but your body never truly recovered.

And it can be confusing, right? When you glance at your fitness tracker or your sleep app, and it

tells you that you slept for those seven and a half hours, but your body feels as though it barely

rested at all. And there's also a version of sleep disruption, where the problem isn't the number

of hours in bed, but the quality of the restoration. You might sleep, what appears to be a full night,

but you wake with the sense that your system still carrying yesterday's fatigue. Your body feels heavy,

your mind's slightly foggy, and the energy that used to return overnight, well, it hasn't

quite reset. Many women try to solve these problems quietly, adjusting routines, experimenting

with supplements, improving sleep environments, or searching for that missing variable that's

going to restore the sleep they remember having before. But these patterns aren't random.

These signals emerging from the systems that regulate sleep, your nervous system, your hormonal

rhythms, your metabolic stability, and the cumulative load that your body's been carrying.

And once we begin to look at sleep through that physiological lens, the conversation starts to change.

Now like I said, when sleep becomes unreliable, the natural instinct is to focus on the sleep itself.

To assume that if you could just find the right supplement or routine or the right

combination of habits, then the sleep would correct itself. But clinically sleep disruptions

really just about sleep. Sleep's just the end result of several physiological systems working

together. Your nervous system, your hormonal rhythms, your metabolism, and your circadian timing

all contribute to whether your body can move into deep restorative sleep and stay there through

the night. When one of those systems shifts, sleeps often the first place you'll notice it.

So one of the most common contributors is your nervous system. Your nervous system is constantly

scanning for safety. When it perceives that things are stable and predictable, it allows your

body to move into the parasympathetic state where deep rest and repair can occur.

And when your system's been carrying sustained responsibility or prolonged cognitive load,

it can begin to hold that subtle level of vigilance. Even when you're physically exhausted,

the part of your nervous system responsible for monitoring the environment can remain slightly

alert. And that alertness can make it difficult for you to fall asleep. And it can also explain why

your body wakes easily during the night. Now as we know, hormones also play a powerful role,

particularly during peering menopause and menopause. Estrogen and producer and influence many of the

neurotransmitters involved in sleep regulation, including serotonin and gaba, and these help your

brain transition into deeper sleep stages. So as these hormones begin to fluctuate,

this stability of those signaling pathways can change as well. So at the same time,

estrogen plays a role in how your brain regulates body temperature. So when that regulation

becomes less stable, it can contribute to night waking or the sense that your body can't maintain

deep sleep in the way that it once did. Now here's something interesting, blood sugar

regulations and other things that often surprises people. It's not something people tend to think

about when it comes to sleep. So your brain requires a steady supply of glucose through the night.

And if your blood glucose drops below while you're sleeping, your body activates a protective

response. Stress hormones such as cortisol and adrenaline are released to bring glucose

back into circulation. That's pretty cool, right? This is all happening without you being aware of it.

And those hormones are incredibly effective at doing their job, but they're also effective at

waking you up. And this is one of the reasons some women notice a pattern of waking suddenly in the

early hours of the morning with a very alert mind. Now of course, our circadian rhythm also plays an

important role. Your internal clock coordinates the timing of cortisol, melatonin body temperature

and metabolic activity across that 24 hour cycle. So when that rhythm becomes disrupted by stress,

irregular schedules, hormonal changes or prolonged nervous system activation, the signals that

normally guide your body into sleep can become less precise. So when you step back and look at

these systems together, a different picture is starting to emerge, right? Sleep disruptions not

random. It's often your physiology responding to shifts and hormones, metabolism, nervous system

regulation, or circadian timing. And understanding the why behind these shifts matters, because when

you understand what's happening inside your body, the goal is no longer simply to force sleep to

happen. The goal becomes restoring the conditions that allow your body to feel safe enough, stable

enough and supported enough, the sleep to unfold naturally. When sleep becomes unreliable, it can start

to show up in your health and resilience. Why? Well, sleep's one of the most important biological

processes that your body relies on for repair and regulation. During deep sleep, your brain

clears metabolic waste. Your immune system recalibrates, hormones are regulated, and tissues across

your body move into active repair. And it's also when your nervous system moves most fully into the

restorative parasympathetic state where recovery can occur. So when sleep becomes fragmented or

shallow, then these processes are affected. And over time, this can influence many areas of your health.

Your blood sugar regulation becomes less stable, your cortisol rhythm might become more erratic,

inflammatory processes can begin to increase, and your brain has fewer opportunities to fully

clear the metabolic bride products that accumulate during waking hours. And that's why persistent

sleep disruption often shows up alongside other changes, right? Your energy becomes less reliable,

your mood can feel more reactive than it used to, your concentration might be harder to sustain.

And your body can start to feel as though it's constantly trying to catch up.

So when sleep changes, your body's often signaling that the system's responsible for restoration

and regulation just need a bit of attention. And for women who carry significant responsibility

in their work, there's an additional layer to consider. Because sleep is one of the primary ways

your brain restores its capacity for complex thinking. During sleep, your brain processes

information from the day, it consolidates memory, it regulates emotional responses,

and it resets the neural networks responsible for decision making and strategic thinking.

So when your sleep becomes inconsistent, those processes are affected as well.

So you might notice that decisions that once felt straightforward require a bit more effort,

or maybe your tolerance for complexity can feel slightly lower than it used to.

Situations that normally wouldn't trouble you can feel more mentally demanding,

simply because your brain hasn't had the same opportunity to reset overnight.

So this isn't about you, it's about physiology. Now many high performing women are amazingly

skilled at compensating for this. You continue showing up, you continue to lead, to deliver,

the same level that people expect from you and from the outside very little appears to change.

But internally, the effort required to sustain that level of performance can gradually increase.

You see, sleep's not separate from how you lead. Your ability to think clearly, to regulate your

emotional responses and navigate complex decisions is deeply connected to the quality of restoration

your brain receives overnight. Which means that when sleep begins to change,

it's not only a signal about your health. It's also something that quietly influences the way

your brain, your nervous system, and your leadership capacity interact every single day.

So when sleep changes in the ways that we've been talking about, the instincts usually

to focus on solving the sleep itself, right? To find that right supplement, the right evening

routine or the missing piece that's going to allow your body to return to the rhythm that it once

had. But often sleep disruptions revealing something deeper about how your system's been operating

for a long time. So many other women who experience persistence, sleep disruption, other ones who are

known for being capable, the ones who carry responsibility well, the ones people trust to handle

complexity, make decisions, keep things moving when situations become demanding. And over time,

your nervous system adapts to that level of responsibility. Your brain becomes really good at

holding multiple streams of information at once. It's tracking what's happening now, it's

anticipating what may happen next and it's mentally preparing for the decisions that are going to be

required. And that ongoing mental processing is what I mean by sustained cognitive engagement.

Your mind spends large parts of the day analysing, evaluating, planning and solving.

And those abilities are part of what allow you to lead effectively.

But your nervous system doesn't automatically switch that pattern off on the day ends.

If your mind's been running at that level of engagement for years, it can remain slightly

vigilant even when you're trying to rest. So in practical terms, that can look like your mind continuing

to scan, reviewing a conversation from earlier in the day, anticipating how a meeting tomorrow might

unfold, mentally checking whether something important's been missed. And there's an important biological

reason that the scanning matters. Because your brains not very good at distinguishing between

something that's happening right now and something that you're vividly thinking about.

So when your mind begins reclaiming a difficult conversation or anticipating tomorrow's

board meeting or mentally preparing how you're going to respond to a challenging situation,

your brain interprets that activity is something that requires attention. And from your brain's

perspective, the event is effectively happening right now. So your physiology begins preparing you

to do that in this real time. Stress hormones such as cortisol and adrenaline, they rise slightly,

glucose released into your bloodstream to fuel your muscles and your brain, your nervous system

shifts towards alertness so that you're ready to respond. In other words, your body begins mobilising

resources for the situation that your mind is focused on, even though you're lying safely in bed.

That mobilisation is incredibly useful during the day when you're navigating complex decisions

in real-world challenges. But when it happens in the middle of the night, because you're

ruminating, it makes it harder for your system to return to the deep restorative sleep

that you need. So your body simply learned that staying mentally alert has been useful.

Eventually, though, your system begins asking for a different rhythm, not less capability

or not less responsibility, but a way of operating where your mind can move more easily

between periods of engagement and periods of restoration. And sleep is often where that

request becomes most visible, right? And when you begin to notice your sleep disruption through

this lens, it starts being simply a problem to fix. It becomes useful information about how

your nervous system has been supporting you for years and what it may now need in order to

continue to support you well. So once you begin to understand why sleep might have changed,

the next question naturally becomes, what can you do to support your body? When sleep shifts some

ways that we've been talking about, the most effective approach is usually to support the systems

that regulate sleep, rather than focusing on sleep and isolation.

So as I said, one of those systems is your nervous system. We talked about how your mind can

remain in a pattern of scanning and problem solving long after the work days technically finished.

So helping your nervous system transition out of that state becomes an important part of restoring

sleep. And so one practical way to begin doing this is to create a deliberate wind-down period

before bed, where your brain's no longer processing work decisions or complex information.

So for example, a simple and effective protocol could be to treat that final hour of the

evening as a transition period. Lights are dimmed, screens are switched off, anything in your mind

is written down, and activities shift towards things that signal safety to your nervous system.

Reading a book, a physical book, not one with blue lights sitting behind it, gentle stretching,

journaling or a quiet conversation, all help your physiology move gradually out of daytime

alertness and into a state where sleep becomes accessible. Metabolics, abilities, and other people

that influence the sleep, more than many people realize. So if your brain requires a steady state

of glucose when you're sleeping and that blood sugar drops too low during the night,

your body's releasing that cortisol in adrenaline to bring glucose back into circulation.

And these hormones are really good at waking you up. So for some people, a small snack before bed,

which includes both protein and carbohydrate can help stabilize blood sugar overnight.

So something simple such as yoga with berries or an apple with nut butter,

this provides enough fuel to help your brain maintain stability through the night,

and it can help to reduce that early morning waking.

Well, my normal changes obviously can influence sleep patterns,

particularly during perimenopause and menopause, when you've got that estrogen and

produced your own levels fluctuating. But one of the lesser-known aspects of this transition

is the role that your liver plays in metabolising hormones. So your liver is responsible for processing

in clearing estrogen. And when that process becomes lesser-fishing, the balance of circulating

hormones can shift in ways that influence sleep, temperature regulation, and nervous system activity.

This is one of the reasons why women often report that they are at least able to tolerate alcohol

when they're transitioning through that perimenopause, menopause tuning.

Supporting liver function becomes an important part of supporting hormonal balance.

And this can include ensuring that you've got enough dietary fibre so that metabolised hormones

are properly eliminated or maintaining regular bowel movements. And it can also include foods

that support liver detoxification pathways, such as your cruciferous vegetables like broccoli,

cabbage, and kale, or bringing bitter foods into your diet.

Circadian rhythms are another important factor in restoring sleep. So your body's got this

internal clock that coordinates melatonin, cortisol, bit temperature, and energy production

across that 24-hour cycle. So two of the strongest signals influencing that clock are light

and darkness. And you need to work with both of these, right? So morning daylight exposure helps

anch your circadian rhythm. So even 10 to 15 minutes of natural light

really in the day sends a powerful signal to your brain that sets the timing for hormone release

later in the evening. And ideally you want this to be natural outside light without your sunglasses

on. So at night reducing exposure to bright and blue light allows melatonin production to

rise naturally. And this helps your body to prepare the sleep. And let's also talk about our

sleep environment. So research consistently shows that the optimal room temperature for sleep

is between 16 and 19 degrees Celsius, keeping the bedroom dark, quiet, and within this temperature

range supports the physiological symptoms that allow that deeper sleep to happen.

Now what you'll notice about this into play between these systems is that none of these

strategies work in isolation. But when your physiology is supported and your environment aligns

with how your body regulates rest, sleep often begins to stabilize again naturally.

This is exactly the kind of recalibration that we focus on inside revitalize. So revitalize

is designed for women who recognize that their sleep, their energy, and their nervous system

resilience have shifted. And they want to restore the physiological foundations that allow their

body to function well again. So what we've talked about today feels a little familiar.

You can learn more about revitalize at my website traceytatty.co.nz forward slash revitalize.

And that's revitalize with an S because I'm in New Zealand. Because the way you think about

sleep really matters. Your beliefs shape the signals your brain sends to your body. And when

sleep becomes something you struggle against, your physiology often responds with more vigilance.

When you begin to understand what your body is communicating, the conversation naturally starts

to shift. So that instead of fighting your body, you can begin to work with it. And that's

where the real restoration begins. I'm sending you lots of love. Bye for now.

More laughter. And if you want to hear more from the Project Joyful Podcast, just click the

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