Your circadian rhythm's guide to autumn

There’s something rather lovely about autumn, isn’t there? Crisp morning walks, golden leaves, cosy jumpers and the perfect excuse to curl up with a warm drink.

But while we’re busy embracing all things autumnal, our bodies are quietly adjusting to something else: the changing light.

As the mornings become darker and the evenings draw in, you might notice that getting out of bed feels a little harder, your energy dips earlier in the day, or you’re suddenly ready for your pyjamas at 7pm.

Sound familiar?

Well, there’s a reason for that, and it all comes down to your circadian rhythm.¹

The good news? A few gentle changes to your daily routine can help you feel more energised, rested and in tune with the season.

First things first: what exactly is your circadian rhythm?

Think of your circadian rhythm as your body’s very own internal clock.

Running on a roughly 24-hour cycle, it helps regulate when you feel awake, when you feel sleepy, and even when your body is ready to digest food.

It influences all sorts of important processes, including:

Your sleep-wake cycle
Hormone release, including melatonin and cortisol
Body temperature
Digestion and metabolism
Energy levels and alertness

Pretty clever, right? And while your internal clock is always ticking away, there’s one thing that plays a particularly important role in keeping it running smoothly: natural light.

Light helps tell your brain when it’s time to wake up and be alert, while darkness signals that it’s time to start winding down.

Which brings us nicely to autumn…

Anyone else ready for bed by 7pm?

As summer fades, the amount of daylight we experience gradually decreases. Those bright, early sunrises become darker mornings, and the long, sunny evenings we enjoyed a few months ago suddenly feel like a distant memory.

These changes can affect the signals that help regulate your internal body clock.

One of the key players here is melatonin, often called the sleep hormone. Your body naturally produces more melatonin in response to darkness, helping prepare you for sleep.

But when daylight becomes less abundant, particularly in the mornings, your body clock may receive fewer of the light cues that help keep it aligned with your daily routine.

The result?

You might find yourself feeling a little sluggish in the mornings, struggling with afternoon tiredness or noticing changes in your sleep patterns. And then, of course, there’s the autumn clock change to contend with!

The important thing to remember is that these seasonal shifts are perfectly natural. Your body isn’t necessarily asking you to overhaul your entire lifestyle. It may simply benefit from a little extra support.

6 simple ways to support your circadian rhythm this autumn

The secret to feeling good as the seasons change isn’t about fighting the darker days. It’s about working with your body’s natural rhythms.

Here’s how –

1. Make morning daylight your new best friend

If there’s one simple habit worth embracing this autumn, it’s getting outside in the morning. Natural daylight is one of the strongest signals your brain uses to regulate your internal clock.

Exposure to morning light helps reinforce the message that it’s daytime, encouraging alertness and supporting your natural sleep-wake rhythm.

And here’s the lovely part: you don’t need glorious sunshine to benefit. Even on those typically British grey, drizzly mornings, outdoor daylight can help.

Try this: Pop outside for a short walk after breakfast, enjoy your morning cuppa in the garden or take the scenic route to work. If you wake before sunrise, aim to get some natural light once it’s available.

Think of it as a little morning reset for your body clock.

2. Keep your sleep routine consistent

We know, we know. When it’s dark and chilly outside, the temptation to stay tucked up under the duvet is very real. But keeping relatively consistent bedtimes and wake-up times can make a real difference to your sleep.

Your circadian rhythm loves predictability. Going to bed and waking up at roughly the same time each day helps reinforce your body’s natural sleep-wake pattern, making it easier to feel sleepy at night and alert in the morning.

Try this: Aim to wake up at a similar time throughout the week, including weekends where possible.

And if you fancy a cosy autumn lie-in occasionally? Enjoy it! It’s consistency over time that matters, not perfection.

3. Give your evenings a gentler glow

Autumn evenings are made for slowing down.

And as it turns out, creating a cosy evening atmosphere can be helpful for your circadian rhythm, too. Bright artificial lighting, particularly late in the evening, can send your brain signals that it’s still daytime.²

This may delay melatonin release and make it harder to feel naturally sleepy. Instead, try creating a warm, cosy atmosphere in the evenings.

Try this: Dim the overhead lights, switch on a warm bedside lamp and put your phone away for a while before bed. A good book, a warm bath or a few minutes of gentle stretching can all help create a relaxing bedtime routine.

Consider it your invitation to embrace the slower pace of the season. Read Alyssa’s article on how to embrace more hygge for inspiration!

4. Give your gut a little downtime

Did you know your gut has its own body clock, too?

Your digestive system follows a daily rhythm, and research suggests there’s a fascinating two-way relationship between your circadian rhythm and your gut microbiome.³

And just like you, your gut needs time to rest and restore!

When we stop eating for the night, our digestive system gets a break from processing new meals and can focus on a natural housekeeping process called the migrating motor complex,⁴ which helps clear leftover food particles through the digestive tract between meals.

Our gut microbes follow daily rhythms, too, so keeping regular mealtimes and allowing a consistent overnight break from eating may help support these natural patterns.

And don’t forget to nourish those friendly gut bacteria with plenty of fibre-rich, seasonal foods like apples, pears, squash and leafy greens.

Try this: Finish your evening meal a few hours before bed and avoid late-night grazing where possible. Think of it as giving your gut a chance to wind down and carry out its natural maintenance overnight. No strict fasting rules needed!

5. Keep moving, even when it’s chilly

When the temperature drops, curling up on the sofa suddenly becomes a lot more appealing than heading outside. But regular movement can help support both your sleep quality and your overall wellbeing.

Exercise also provides useful signals to your body about the daily rhythm of activity and rest. And you certainly don’t need an intense workout to feel the benefits.⁵

Try this: A brisk lunchtime walk, a gentle yoga session or a little gardening can all help you stay active. Better still, getting active outdoors during daylight hours means you can combine movement with that all-important natural light exposure.

Two lovely habits in one!

6. Create an autumn wind-down ritual

One of the nicest things about autumn is that it encourages us to slow down a little.

So why not make the most of it? A calming evening ritual can signal to your body that the busy part of the day is coming to an end.

It doesn’t need to be anything elaborate.

Perhaps it’s a warm, caffeine-free herbal tea, a few pages of your favourite book, a relaxing bath or simply taking ten minutes to switch off from the day’s demands. Try keeping your bedroom cool, dark and comfortable, too. Over time, these small cues can become familiar signals that help prepare your body for rest.

And remember, rest isn’t something you have to earn. It’s an important part of looking after yourself.

An Extra Hour in Bed? Yes Please!

Ah, the autumn clock change.

That lovely extra hour in bed sounds wonderful in theory, doesn’t it?

But while gaining an hour can feel easier than losing one in spring, changes to the clock can still temporarily affect your sleep routine.

Your body clock doesn’t necessarily adjust to a new schedule overnight.

If you find the change unsettling, try keeping your usual waking routine as consistent as possible and making the most of natural daylight in the morning.⁶ Regular mealtimes and a relaxing bedtime routine may also help you settle into the new schedule.

And if you feel a little out of sorts for a few days, be gentle with yourself.

A little autumn reminder: It’s OK to slow down

We often think of feeling healthy as having endless energy, being productive and ticking everything off our to-do lists.

But our bodies aren’t machines.

And just as the natural world changes with the seasons, our routines may need to shift a little, too.

Autumn is a lovely opportunity to check in with yourself.

Are you getting enough daylight? Are you making time for rest? Are you nourishing your body with foods that make you feel good?

You don’t need to transform your entire routine overnight. Start with one small change.

A morning walk. A consistent bedtime. A little less scrolling before sleep. A comforting, nourishing evening meal.

Those simple habits can add up.

Because supporting your circadian rhythm isn’t about controlling every hour of your day. It’s about giving your body the gentle, consistent signals it needs to thrive.

So this autumn, embrace the cosy evenings, enjoy those golden morning walks and remember to give yourself a little extra care as the seasons change.

And what better way to embrace those cosy autumn evenings than with a warming, nourishing meal? Give your gut some love with our delicious Gut-Friendly One-Pot Stew – packed with goodness and perfect for those chilly nights!

Any questions? Contact one of our Nutritional Therapists via live chat, weekdays from 8 am to 8 pm.