By Pauline Cox MSc, Functional Nutritionist, Author & Co-Founder of Sow & Arrow
Sleep might seem like something we do simply to rest our weary bodies, however sleep is SO much more than an opportunity to recharge our batteries. It is one of the most powerful tools we have for protecting our hormonal health, our weight, energy, and long-term wellbeing.
And yet, so many of us aren’t sleeping well. Whether it’s the mind that won’t switch off, the 3am wake-up that leaves you staring at the ceiling, or that heavy, unrested feeling that follows you through the day, poor sleep is one of the most common complaints I hear from clients, and one of the most impactful to address.
So let’s dive into why sleep matters so much more than you might think, and the simple, science-backed habits and nutrients that can genuinely transform your nights.
Why Sleep Matters More Than You Think
Sleep is highly influenced by our circadian rhythm, the biological changes the body goes through in a 24-hour cycle. When this rhythm is working well, energy peaks at the right times: you feel awake and refreshed in the morning with energy to carry out movement, focused work and tasks, then by the evening you naturally begin to feel calm, sleepy, and ready for rest. Hunger levels are appropriate too, gut health functions well, and our health flourishes.
Sadly, much of how we live influences our circadian rhythm in a negative way, impacting our sleep, energy and hormonal balance. Minor changes to when and what we eat, how we sleep, levels of light exposure in our day and evening can all be highly influential on our sleep, weight, energy levels, and long-term health.
Sleep and Hormones: The Missing Link
One of the most overlooked connections in health is the relationship between sleep and hormonal balance. This isn’t just relevant for women navigating perimenopause, it matters for everyone.
A number of beneficial hormones are released while we sleep:
Melatonin, our key sleep hormone, is produced in response to darkness and suppressed when we expose our eyes to light. Melatonin eases us off to sleep, but also possesses anti-inflammatory and antioxidant properties. It’s made from our feel-good hormone, serotonin, so when serotonin dips (as it often does when oestrogen falls), sleep can suffer too through lower levels of melatonin.
Growth hormone is produced while we sleep and is used to preserve proteins, hair, skin, nails, cartilage, and muscles, it is the ultimate anti-ageing hormone. It also helps to build muscle and stokes your metabolic fire and fat-burning machinery. Women lose growth hormone at an earlier age than men, resulting in women being more prone to muscle loss and, sadly, weight gain.
When we don’t sleep well, the effects ripple through our entire system:
- Insulin sensitivity drops: meaning your body is less able to mop up blood sugars and more likely to convert them to fat
- Hunger hormones go haywire: ghrelin (the hunger hormone) increases while leptin (the ‘I’m full’ hormone) falls, a double whammy that makes us far more likely to overeat
- Cortisol levels rise: stealing progesterone building blocks, disrupting sex hormone balance, and further adding to our inability to get good shut-eye
- Growth hormone declines: leading to reduced lean muscle mass and increased insulin resistance
Sound familiar? If you’re nodding along, you’re certainly not alone.
What’s Actually Keeping You Awake?
Does this scenario sound familiar?
“I’m exhausted, but the moment my head hits the pillow, my mind starts racing.” “I fall asleep fine, but I wake at 3am and can’t get back to sleep.” “I sleep eight hours but still wake up feeling drained.”
There are many causes of poor sleep quality and insomnia. Many women experience insomnia as a result of low progesterone, which can happen at the beginning of perimenopause or during times of high stress. When our nervous system is stuck in a persistent state of fight or flight, overthinking, worry, and obsessive thoughts can prevent sleep.
Changes in work habits, particularly working from home, have blurred the lines between home and work life. Eating too late at night, alcohol consumption, too many stimulants such as caffeine and sugar during the day, physical inactivity, and too much exposure to light before bed can all impact the quality and quantity of our sleep.
The good news? Optimising sleep can be transformative for hormonal health, energy, body composition, and long-term health.
Sleeping Beauty: Habits That Transform Your Nights
Having discovered the disruptive nature of poor sleep, let’s look at the key principles that can improve and optimise sleep quality. These are the habits I recommend to every client, and follow myself every single day.
A good night’s sleep starts in the morning
Our morning walk, exposing our eyes to daylight upon waking, is the ideal way to set our body clock, increasing dopamine and serotonin levels in preparation for peak alertness and focus for the day. Try to get outdoors first thing for a 15-20min walk every day. If you can’t get outside, sit by a large window to eat breakfast and lunch, or place your desk near a window instead. Maximise your light exposure during the day, it makes all the difference to how well you sleep at night.
Coffee o’clock
Coffee can be the first thing many people reach for when the alarm clock is ringing. Waiting ninety minutes before hitting the caffeine can help the brain naturally shift to an ‘awake’ state. Keeping caffeine to the morning can also be hugely helpful if you struggle to sleep at night. Caffeine has a long half-life and can stay in your system longer than you think. Decaf may be a better option for those using coffee as a means to ‘get going’ in the morning, stimulating your already taxed adrenals.
Break-fast: make it count
Break your fast with a nutritious, blood-sugar-stabilising breakfast. Protein in the morning works well for our muscle-building biology and will keep you feeling fuller for longer, providing the building blocks for making your feel-good neurotransmitters, dopamine and serotonin, both essential for healthy sleep later that night.
Light me up … dim me down
Daylight in the morning, ideally at lunchtime and in the evening, signals to our circadian rhythms the time of day and whether we should feel awake and alert or sleepy and calm. Modern living is a threat to great sleep, as we spend too much time away from natural light in the day and expose ourselves to too much blue light from screens in the evening and at night. Light emitted from screens and phones blocks melatonin production, disrupting sleep.
As the evening approaches, start to reduce your light exposure. Blue-light-blocking glasses while working at a computer can help protect melatonin levels in readiness for sleep. Then when you go to bed, try to create a really dark room, because darkness stimulates melatonin. A sleep mask can be really helpful if you live in an urban area with streetlights seeping dim light into your bedroom.
Stop thinking … !
Excessive thinking before bed can be a sign that your adrenal glands have been working overtime and your stress response is struggling to switch off. This is where the right foods, targeted nutrients, and supplements can make a real difference, easing you off to a night of good slumber.
Create a sleep-positive bedtime routine
A sleep-positive routine is setting yourself up for a good night’s sleep. This might include a cup of herbal tea, soaking in a warm bath, or reading a book. Staying away from negative or overly stimulating TV programmes which can increase cortisol and adrenaline. Meditation can also help relax the body and mind before bed, increasing oxygen levels through deep breathing and helping to switch off excessive thinking.
Nutrients That Support Deeper, More Restorative Sleep
Alongside good habits, certain nutrients can make a remarkable difference to sleep quality. These are the supplements I personally reach for and recommend most, because they work with your body’s own chemistry rather than against it. No drowsy mornings, no dependency, just gentle, effective support for the calm, restful sleep you deserve.
Magnesium Bisglycinate – my nightly essential
If there’s one supplement that can be very supportive of deep sleep, it’s magnesium bisglycinate. I take mine every single night, just before bed.
Bisglycinate is one of the most absorbable and well-tolerated forms of magnesium, gentle on the digestive system and less likely to cause the laxative effects often associated with other forms. Magnesium plays a vital role in hundreds of enzymatic reactions in the body, supporting energy production, relaxation, healthy blood sugars, thyroid function, Vitamin D activation, and hormonal balance. The glycine it’s bound to also contributes to collagen building and helps lower core body temperature at bedtime, an important trigger for falling asleep.
TerraNova Magnesium Bisglycinate Complex is a top seller at Sow & Arrow for good reason. It’s enhanced with TerraNova’s unique Magnifood blend of green oat seed, nettle leaf, and pumpkin seed, no fillers, no binders, just clean, highly bioavailable magnesium. Available in both 50 and 100 capsule sizes.
If you’d rather not take capsules, TerraNova Smooth MAG is a lovely alternative — a bioavailable magnesium powder you can mix into water, plant-based milk, yoghurt, or blend into a calming evening smoothie. It’s free from the fillers and binders you’ll find in many supplements, using TerraNova’s Magnifood complex of freeze-dried whole foods and botanicals instead.
Reishi – the mushroom of calm and resilience
Reishi has been treasured for centuries in traditional medicine, known as the “Mushroom of Immortality” for its remarkable ability to support calm, resilience, and sleep. It works as a natural adaptogen, helping the body manage daily stress by regulating cortisol, reducing inflammation, and easing physical tension. Research suggests it may also reduce interruptions to REM sleep, improving overall sleep quality and leaving you feeling genuinely rested come morning.
We stock two high-quality options. Mushrooms For Life Organic Reishi is a 100% fruiting body dual extract powder using sustainably harvested organic reishi, wonderful stirred into an evening drink or added to soups. Alternatively, the Bristol Fungarium Organic Reishi Tincture is a potent triple-extract crafted right here in Bristol from organically grown and responsibly foraged mushrooms.
L-Theanine – calm without drowsiness
L-Theanine is an amino acid naturally found in tea leaves that has been shown to increase levels of GABA, our calming neurotransmitter, which can result in an increased feeling of calm and relaxation without drowsiness.
Viridian L-Theanine & Lemon Balm capsules provide 200mg of L-Theanine alongside 300mg of lemon balm extract, which further supports relaxation and healthy sleep. It’s a brilliant choice for anyone whose mind tends to race at bedtime. Available in both 30 and 90 capsule sizes.
Your Take-Home Messages
If there’s one thing I want you to remember from this article, it’s this: sleep is not a luxury, it is the foundation upon which everything else is built. Here are the key points to carry forward:
- Sleep is essential for hormonal health, from building neurotransmitters and growth hormone to supporting detoxification and insulin sensitivity
- Poor sleep is a silent disruptor, contributing to weight gain, fatigue, cravings, low mood, and accelerated ageing
- Your circadian rhythm is your greatest ally, work with it by managing light exposure, meal timing, and caffeine
- A good night’s sleep starts in the morning with daylight, protein, and movement
- Targeted nutrients like magnesium, reishi, and L-theanine can gently and effectively support deeper, more restorative sleep
- Small changes create big results, you don’t need to overhaul your routine overnight
Start where you are. Delay that first coffee by ninety minutes. Get outside for a morning walk. If needed, add a magnesium supplement to your bedtime routine. These small shifts compound into significant change.
Your body has remarkable wisdom, and when you give it the right conditions, it responds. Better sleep is one of the most powerful gifts you can give yourself and your body will thank you for every small step you take toward making that happen.
Here’s to sleeping deeply and peacefully!
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