March 30, 2026

On waking too hot.

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3am alertness arrives without warning, a switch thrown somewhere in the body’s circuitry, and by the time I’ve registered it, I’m already fully conscious, my heart pounding steady, mind unhelpfully clear.

This is not the blurred waking of a noise in the street or a dog’s bark from downstairs, it’s something internal. The stickiness comes next. The slow realisation, as wakefulness settles, that I am attached to the mattress in a way that was not true when I fell asleep. My chest, the back of my neck, the strip of skin where my vest meets waistband, all of it, damp. I lie very still for a moment, as though stillness might negotiate with the heat. It doesn’t. The wave rises anyway—that’s the only word for it, a wave—and negotiation ends.

I peel myself free and take a few steps forward in the darkness, towards the bathroom, groping for the door handle in the approximate place I know it to be and find air, then more air, then the slightly lower position it has always actually occupied. I do this every time. Some part of my brain has simply decided that the handle lives six inches higher than it does, and no quantity of nocturnal corrections has persuaded it otherwise.

In the bathroom, the window is already open. I left it that way on purpose, the kind of forward-planning that perimenopause has made second nature. A cool flannel within reach. A spare vest hanging on the back of the door, placed there the previous evening with the resigned practicality of someone who knows what’s coming.

The cool air is immediate and kind. I sit in the near-dark. Near dark, because our neighbour appears to have converted their garden floodlight from motion-sensitive to simply always on, at some point in the past year, without apparent reason or remorse. It angles directly into our bathroom window. I have come to think of it as a minor antagonist in the ongoing project of getting enough sleep: just as the heat retreats and drowsiness might, theoretically, begin its return, there is the light, white and insistent, completing the work of waking me that the body began. I resent it every single time with a consistency I find almost admirable.

I wipe myself down with the damp flannel. The cooling as the sweat evaporates is not, it turns out, simply relief, instead it’s a brief sequence of tiny stinging points, a flash of goosebumps rising across my chest and arms before the temperature settles. The body reversing course with the same bluntness with which it overshot. I pull the spare vest over my head, drop the damp one on the floor, and pad back to bed.

There is an art to re-entering a bed you have sweated through. It involves a quick assessment of the fitted sheet and finding the driest available quadrant and angling towards it. Flipping the pillow to the cold side, which will remain cold for approximately forty-five seconds before equalising to room temperature, but those forty-five seconds are a welcome relief.

Sleep, on these nights, does not return quickly. It reconstitutes itself slowly, reluctantly, and often incompletely. My husband remains sleeping beside me, untroubled. My mind, unhelpfully alert, considers various topics it has no business raising at this hour.

This is my cycle now or, at least, this particular expression of it. The nights that coincide with the heavier days of my period are reliably worse, and I’ve come to recognise the pattern well enough to anticipate it, even if anticipation doesn’t do much to soften the reality. Perimenopause has been, among other things, a lesson in the gap between knowing what’s happening and being able to do anything useful about it.

I’ve read a great deal on the subject over the past two or three years, wading through the conflicting advice and passionate advocates for particular interventions. I’ve started paying attention to what I wear, what I eat in the evenings, whether the room is cool enough before I get into bed. Small variables, adjusted and monitored with the mild obsessiveness of someone who doesn’t want to feel this way but also can’t continue doing nothing.

The duvet question.

The duvet has been on the list for a while. The bamboo duvet I’ve been using the past few years was working, until it wasn’t, or perhaps until the symptoms outpaced it. I’d been looking at options designed specifically for temperature regulation and had gone some way down the rabbit hole of the Scandinavian approach: two single duvets on a double bed, each person regulating their own temperature independently, no negotiation required. It was something I first researched back in 2020, when I first started writing about perimenopause and sleep, in a post about sustainable bedroom updates that turned, somewhat inevitably, into an early dispatch from this particular territory. My husband, to his credit, was entirely open to the idea then and remains so now. The obstacle was not him.

It was the duvet covers. I have a considerable collection of linen ones—all doubles—accumulated over years, in an array of colours that I love to mix and match. Single duvet covers, I discovered when I looked into it properly, tend to come in designs that are either aimed at children or at people whose relationship with their bedroom aesthetics differs significantly from mine. The Scandinavian solution, so elegant in principle, would have required retiring an entire cupboard’s worth of covers I have no intention of retiring.

I’ve also started questioning the linen itself. For most of my adult life I’ve been drawn to its weight, its texture, and the way it softens and improves with washing. But linen breathes differently from cotton, and I’ve found myself wondering, on the longer, stickier nights, whether pure cotton might serve this particular season of my life better.

A few weeks ago, Simba got in touch about their Hybrid Duvet**, a product I’d already been looking at it and considering. The duvet utilises Stratos technology on the upper layer, and is designed to draw heat away and keep the surface cooler, with a filling made from recycled PET fibres. The brand is B Corp certified, and the double retails at £199; a considered investment, but not inaccessible.

The duvet arrived this week and has already made its way onto the bed. We slept under it for the first time last night and I was pleasantly surprised with how weighty and reassuring it felt, whilst still feeling crisp and cool to the touch. It holds its shape far more rigidly than the bamboo duvet, and delivers a rather pleasing crinkling noise as you gather it around your body, reminiscent of those sturdy duvets you find in high-end hotel chains.

Whether it will hold its own against the 3am heat remains to be seen. I’ll post an update here in a few months.

This post is in collaboration with Simba, who have gifted me a Hybrid duvet for review. As always, all thoughts and opinions are my own. I’ll update this piece once I’ve used the duvet properly over time. All photography © Kate Baxter.

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On waking too hot.

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