The Nervous System Reset – Why You’re Struggling With Sleep, and How to Restore It Naturally.

Published on March 19, 2026

Part of the series: The Nervous System Reset – A Blog for Stress, Anxiety & Overwhelm

By Collette Lees

Why You’re Struggling With Sleep, and How to Restore It Naturally.

In Part One of The Nervous System Reset series, we explored why “you time” is essential for calming the nervous system and reducing stress and overwhelm.

When the nervous system doesn’t get the chance to reset during the day, it often shows up at night — through restless sleep, a busy mind, or waking feeling unrefreshed.

In this second part of the series, we’ll explore why this happens and how you can gently support deeper, more restorative sleep.

Truthfully, I can’t think of many people who sleep well all of the time. I’m a light sleeper myself — and I’m genuinely stoked when I sleep straight through the night. It always feels like such a gift. I know the next day will flow with more ease.

Quality sleep is a game-changer. It influences mood, hormones, energy, digestion — everything.

In this series, I’m exploring why sleep can become disrupted when the nervous system is under stress, and how we can gently restore deeper, more restorative rest.

When Stress Steals Your Sleep

There are many things that can affect our sleep, but stress is one of the biggest. It’s not just the stress itself — it’s what stress does to your body.

You might clench your jaw when you’re worried or overwhelmed. This creates tension in the jaw and neck, often leading to discomfort or pain. The more it hurts, the more you tighten. Then you find yourself lying awake at night with a sore neck and jaw, while a million thoughts run through your mind.

Your sleep becomes light and broken. A busy mind and an uncomfortable body keep waking you throughout the night, and you start the next day feeling exhausted, with even less energy than the day before.

And so the cycle continues.

What’s Happening Inside the Body

When the nervous system is under prolonged stress, the body spends more time in the sympathetic state — often called the fight-or-flight response. This state is designed to protect us in short bursts, but it isn’t meant to stay switched on all day and night. When it does, the body produces more stress hormones like cortisol and adrenaline. These chemicals keep the brain alert and the body on standby, which can make it difficult to relax, fall asleep, or stay asleep. Restful sleep happens when the body shifts into the parasympathetic state — sometimes called rest and digest — where healing, digestion, and deep restoration can occur.

This is just one example of how stress can affect the body. Internally, your nervous system may be stuck in a constant fight-or-flight response, always waiting for the next thing to go wrong — like the bear is constantly on your back.

Your appetite may reduce, and when you do eat, it’s often something quick and convenient with little nutritional value, leaving you even more depleted.

On the rare occasion you have the energy to sit down and prepare a nourishing meal, your stomach may feel tense and tight, making digestion difficult. Food sits heavily, leaving you bloated and uncomfortable.

Again, the cycle continues.

The good news is that small, gentle changes can help signal safety to your nervous system and support better sleep.

Gentle Ways to Support Restful Sleep

A Few Simple Tips to Support Restful Sleep

• Write down your thoughts when they pop up.

Anything from “book an appointment” to “eggs on the shopping list” or “send that email.” Write it down on a notepad and let it go. It becomes your checklist for the morning.

• Dim the lights at least an hour before bedtime.

Soft lighting helps prepare your body for rest. Make use of candles, warm lamps, or gentle lighting to create a calm environment.

• Put your devices on night mode from sunset to sunrise.

This reduces blue light exposure and helps your body follow a more natural light rhythm.

• Set a bedtime timer one hour before sleep.

When it goes off, it’s time for devices down. Screens are highly stimulating. Instead, read a book, listen to calming music, do some gentle art or crafts, or simply enjoy conversation.

• Aim to finish dinner by around 7pm.

This gives your body time to digest before sleep. Evening meals are best kept lighter — heavy meals require a lot of energy to break down and process, while your body should be resting.

• Avoid stimulating foods after 4 pm.

Caffeine and sugar can interfere with sleep. If you have a sweet tooth, try fruit or naturally sweet vegetables like carrot, pumpkin, or sweet potato — in moderation.

• Schedule small moments of downtime during the day.

Even 10–15 minutes to pause, breathe, or step outside can help reset your nervous system and remind your body that the bear isn’t actually on your back.

When Your Body May Need More Support

I hope you can take a few ideas from this and experiment with what works for you. Not everything will be practical for everyone all of the time, but even small changes can make a meaningful difference to how your body feels and how deeply you sleep.

As I mentioned earlier, stress can also affect digestion, which may reduce nutrient absorption and impact important brain chemicals involved in sleep.

If you’re feeling constantly tired, wired, or simply not quite yourself, it may be worth looking a little deeper. Sometimes the body is simply missing key nutrients needed to support healthy nervous system function and restorative sleep.

You’re welcome to complete my free, confidential Nutrient Appraisal, followed by a 15-minute consultation, where we can explore whether nutrient deficiencies — such as amino acids or neurotransmitter imbalances — may be affecting your sleep and energy.

Because when the body feels safe and supported, sleep often returns naturally.

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