Perimenopause: The Phase No One Really Warns You About
Perimenopause can begin in your late 30s or 40s and bring symptoms like brain fog, fatigue, sleep problems, and hormonal changes. In this guide, we explore what perimenopause really is, why your body feels different, and simple ways to support your wellbeing during this stage of midlife.
WELLNESS
3/11/20265 min read


There’s a moment many people experience in their late 30s or 40s when things start to feel… different.
Not dramatically. Not overnight.
Just subtly enough to make you question yourself.
Maybe you’re suddenly waking up at 3am for no reason.
Maybe your patience feels thinner than it used to be.
Maybe your skin has changed, your energy dips earlier in the day, or your favourite jeans don’t fit the way they did six months ago.
You might think:
Am I stressed?
Am I just getting older?
Why does my body feel unfamiliar?
For many people, the answer is something rarely talked about openly:
Perimenopause.
And if no one has explained it to you before, it can feel confusing, frustrating, and strangely isolating.
Let’s talk about it honestly.
What Perimenopause Actually Is
Perimenopause is the transitional stage before menopause, when your body gradually shifts away from its reproductive years.
But here’s the thing that surprises most people:
It can start earlier than you think.
For many, perimenopause begins in the late 30s or early 40s. For others it starts later. There isn’t one universal timeline.
During this phase, the hormones oestrogen and progesterone begin to fluctuate.
Not decline in a neat, predictable way.
They fluctuate.
Up one month.
Down the next.
Sometimes dramatically.
Those fluctuations can affect multiple systems in your body, including:
sleep
mood
metabolism
skin
brain function
energy levels
Which is why perimenopause rarely shows up as just one symptom.
It often shows up as a collection of small changes that slowly begin to add up.
The Subtle Signs Most People Miss
One of the reasons perimenopause feels confusing is that the symptoms don’t always scream hormones.
Instead, they whisper.
You might notice:
periods becoming slightly irregular
waking during the night
brain fog or forgetfulness
anxiety that feels new or unfamiliar
changes in weight distribution
joint aches
reduced stress tolerance
skin that suddenly feels drier
fatigue that coffee no longer fixes
Many people spend years thinking they’re simply:
overworked
stressed
burnt out
“not taking care of themselves enough”
When in reality, their hormones are shifting.
And when you don’t understand what’s happening, it’s easy to blame yourself.
The Emotional Side No One Talks About
Let’s talk about something that doesn’t appear on symptom checklists.
The emotional experience.
Perimenopause can make you feel like you’ve temporarily lost the instruction manual for your own body.
The routines that used to work suddenly don’t.
The diet that always kept you balanced feels ineffective.
The sleep schedule you relied on stops delivering the same results.
And that can feel deeply unsettling.
There’s also a strange cultural silence around this stage of life.
Teenagers are told about puberty.
Pregnancy is discussed endlessly.
But the hormonal transition that happens in midlife?
Many people enter it with almost no information at all.
Which is why conversations about perimenopause are so important.
Understanding what’s happening doesn’t fix everything overnight, but it removes the mystery.
And that alone can be incredibly empowering.


Why Your Body Feels Different
One of the most common frustrations during perimenopause is feeling like your body suddenly plays by new rules.
For example:
You might notice that sleep becomes lighter.
Oestrogen plays a role in regulating sleep cycles, and fluctuating levels can make it easier to wake during the night.
You might also experience changes in metabolism.
Hormonal shifts can influence how your body stores fat and uses energy, which is why many people notice weight accumulating around the middle even if their habits haven’t changed dramatically.
Mood can also feel different.
Oestrogen interacts with brain chemicals like serotonin and dopamine, which help regulate mood and emotional resilience.
When those hormones fluctuate, it can affect how steady you feel emotionally.
None of this means something is “wrong” with you.
It means your body is moving through a natural transition.
Supporting Your Body Through Perimenopause
The goal during perimenopause isn’t to fight your body.
It’s to support it.
Small lifestyle habits can have a powerful impact on how you feel during this phase.
Nourish your body with whole foods
Your body becomes more sensitive to blood sugar fluctuations during perimenopause.
Prioritising protein, fibre, healthy fats, and minimally processed foods can help stabilise energy and support hormone balance.
Whole foods also support gut health, which plays a role in how hormones are metabolised.
Strength training becomes incredibly valuable
Muscle mass naturally declines with age, but resistance training can help maintain strength, support metabolism, and protect bone health.
It doesn’t need to be extreme.
Even two to three sessions per week can make a difference.
Sleep deserves serious attention
Sleep disturbances are incredibly common during perimenopause.
Simple habits can help support better rest:
keeping a consistent sleep schedule
reducing late-night screen exposure
limiting caffeine later in the day
creating a calming evening routine
Sleep is one of the most powerful tools your body has for hormonal regulation.
Stress management matters more than ever
During perimenopause, the body often becomes more sensitive to chronic stress.
Practices like walking, meditation, journaling, or spending time outdoors can help regulate the nervous system and support overall wellbeing.
The Importance of Talking About It
Perimenopause has historically been treated as something people should quietly endure.
But that silence hasn’t helped anyone.
When we talk openly about midlife health, we make it easier for people to recognise what they’re experiencing and seek the support they need.
We also shift the narrative away from decline and toward adaptation and self-understanding.
Your body isn’t breaking.
It’s changing.
And change, when understood, can be navigated with far more confidence.
A New Phase of Self-Awareness
There’s something quietly powerful about this stage of life.
Perimenopause often coincides with a period when many people begin paying closer attention to their health, their energy, and the way they want to live.
You start noticing what truly supports your wellbeing.
What drains you.
What energises you.
What matters.
In many ways, perimenopause can become a catalyst for a deeper relationship with your own body.
Not because it’s easy.
But because it invites awareness.
Final Thoughts
If you’ve been feeling like your body has shifted in ways you can’t quite explain, you’re not imagining it.
Perimenopause is a real biological transition, and millions of people move through it every year.
Understanding what’s happening is the first step toward navigating it with confidence rather than confusion.
At Hērnú Wellness, we believe midlife wellness should be approached with curiosity, compassion, and practical knowledge.
Because when you understand your body, you’re far better equipped to care for it.
And that understanding can change everything.
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