When it comes to improving your health and your healthspan, sleep is the place to start. 

A quick reminder…

Lifespan is the number of years you live.
Healthspan is the number of years you live in good health.

I am doing a deep dive into the four factors that influence healthspan

1. Sleep
2. Nutrition
3. Movement
4. Connection

Because my goal is to make sure my healthspan and lifespan are as closely aligned as possible, and I want to live well and be strong in the latter years of my life. 

Why start with sleep?

Of the four factors, sleep is the most important. That’s because sleep is the pillar that everything else hangs from. Sleep sets the stage for your entire day. It’s the foundation of good health because it is almost impossible to implement other changes in your life if you don’t have a strong sleep foundation.

The great news is that for most people, sleep is a lifestyle problem. And you can relatively easily implement lifestyle and environmental changes to improve it.

Sleep isn’t just about feeling rested, it’s essential for long-term health. During deep sleep, your body goes into repair mode: clearing toxins, balancing hormones, restoring cells and strengthening brain function. Over time, this nightly reset supports your energy, focus, immune system and even your longevity, helping you not just live longer, but feel better for longer.

Why sleep matters most?

Without good sleep, our ability to make healthy choices declines. When we’re tired, everything feels harder—cooking, exercising, connecting. Think of the nights you’ve ordered takeaway instead of making dinner, or hit snooze instead of going for your morning walk, or reached for the 3pm chocolate bar to get an energy boost. We’ve all been there. Then we get down on ourselves for a lack of motivation or willpower, when it’s actually our biology at play. Poor sleep disrupts the hormones that regulate hunger, energy and mood, and dulls the part of the brain responsible for self-control.

Sleep sits at the foundation of health. It supports brain function, mood, energy and motivation. Without sleep, all of us will struggle to consistently implement good habits.

Sleep magnifies our habits in both directions. Poor sleep amplifies unhealthy behaviours, while good sleep strengthens the positive ones.

During sleep, the body repairs, detoxifies and consolidates memory. Deep sleep strengthens the immune system and physical repair, while REM sleep supports learning, creativity and emotional balance. Chronic sleep loss, on the other hand, accelerates ageing, inflammation and metabolic disease.

While everything is interconnected, sleep is something we can all influence. The way we wind down and prepare for rest directly affects how well we sleep and how our brain functions the next day.

Good sleep is not a luxury. Humans are designed to need sleep. It’s one of the most powerful tools we have for living well, thinking clearly and thriving long-term.

What’s happening when you sleep?

One of the things I love most about the brain is that it takes a bath every night.

Because our brains are so active during the day, they naturally accumulate waste products—like excess proteins—from all that thinking and processing. Sleep is when the cleaners come in. A specialised system called the glymphatic system gets to work, clearing out waste from the brain’s interstitial fluid.

During deep (non-REM) sleep, cerebrospinal fluid (CSF) washes through the brain, flushing away the by-products of our daytime activity and leaving behind a refreshed, “clean” brain.

Good sleep is essential for clearing fatigue, brain fog and toxins, and for keeping our cognitive function sharp. When this nightly clean-up doesn’t happen, waste builds up and inflammation can rise—factors linked to conditions like Alzheimer’s and dementia.

Sleep is a biological imperative. We need it to clear the brain, process thoughts, consolidate memories and strengthen neural connections that protect long-term health.

So yes, your brain really does take a bath every night. And making sleep a priority means giving it the time to do its important clean-up job.

So, how do you improve your sleep?

Start with taking a look at your sleep hygiene.

Sleep hygiene is the collection of daily habits, behaviours and environmental factors that set you up for consistent, high-quality sleep.

In simple terms, it’s everything you do (and don’t do) to help your body and brain recognise that it’s time to rest.

Good sleep hygiene includes things like:

• Keeping a regular sleep and wake time
  
• Limiting screens and bright light before bed
  
• Creating a dark, cool, quiet sleep environment
  
• Avoiding caffeine, alcohol and heavy meals too close to bedtime
  
• Having a relaxing wind-down routine (e.g. reading, stretching, journaling)
  
  

Good sleep hygiene is not about perfection and doing exactly the same thing at the same time every night - that’s not realistic for our lives, and sets us up for failure. It’s more about building consistent cues that train your body and mind to transition smoothly into sleep.

Create a getting ready for bed routine

Creating a consistent ‘getting ready for bed’ routine helps your brain decompress and start to wind down, calm your nervous system and help your body relax. Over time, these cues help your brain associate these steps with sleep, making it easier to drift off and stay asleep.

Everyone is different and you need to create a routine that works with your lifestyle. To give you an example, here’s the Daily Habit sleep hygiene routine (give or take 30 mins). I aim to follow this routine 5 out of 7 days to allow flexibility for ‘life’. But to be honest, the more you stick to a sleep hygiene routine, the better you feel and the more you want to stick to it.

The most important element of your sleep routine is setting a consistent sleep time and wake time.

Create a sleep sanctuary

I believe your bedroom should be reserved for just two things — sleep and sex.

Our brains are highly associative. Watching TV, scrolling emails, or eating in bed sends mixed signals about what that space is for. Even when devices are on silent, your mind can stay subconsciously alert, waiting for notifications. There’s also emerging discussion about how electromagnetic waves from phones and TVs may affect sleep quality.

Protect your sleep sanctuary. Keep screens out of your bedroom and let your brain fully associate your bed with rest, intimacy, and restoration.

Top 5 sleep habits for healthspan

These five sleep habits are ranked in order of their impact on your healthspan. If you’re ready to start improving your sleep, these are the most effective changes to focus on first.

1. Keep a consistent sleep schedule

• Go to bed and wake up at the same time every day, even on weekends.
• Supports your circadian rhythm, improves sleep quality, hormone regulation and immune function.

2. Prioritise sleep duration (7–9 hours for most adults)

• Aim for 7–9 hours of quality sleep each night to allow your body and brain to fully repair and reset.
• Supports cognitive function, hormone balance, metabolism and overall healthspan.

3. Limit stimulant exposure before bed

• Switch off phones, TV and computers 1–2 hours before sleep.
• Avoid caffeine, food, alcohol and excess fluids 1-2 hours before sleep.
• Calms the nervous system, supports sleep hormones and helps your body enter deeper, more restorative sleep phases.

4. Create a calming sleep hygiene routine

• See above
• Could include reading, gentle stretching, cuddling, breathing exercises or journaling.
• Lowers cortisol and signals to your body it’s time to rest.

5. Optimise your sleep environment

• Keep your bedroom dark, cool (around 18°C) and quiet.
• Invest in a comfortable mattress and bedding, wear ear plugs to block out noise, wear an eye mask to block out light.
• Environmental tweaks can dramatically improve deep sleep quality.
  
  

Still having trouble sleeping?

There are many factors that can disrupt sleep. A 10% increase in body weight, for example, is associated with a fourfold increase in sleep issues. Perimenopause is a major disruptor for women in mid-life. Shift workers often struggle with disrupted circadian rhythms. And stress—perhaps the most common culprit—can significantly affect both the quality and quantity of sleep.

If you’ve made these sleep hygiene changes and your sleep issues persist, look beyond your bedtime routine. Often, the root cause lies in your daytime life—stress, anxiety or other lifestyle factors.

How Can We Help?

A Health Coach can help you identify the root causes of your sleep issues and create daily habits that support better sleep. They can also guide you toward other professionals if needed, such as sleep specialists or psychologists.

Contact Daily Habit to learn how health coaching can help you build better sleep habits and restore the rest your body and mind need.