By Andrew Heathcock | SynapReset Insomnia Therapy, Brisbane

The Question That Keeps People Up at Night

It’s 6:30am. Your alarm goes off after what felt like a restless night. You grab your phone, open your sleep tracking app, and it tells you that you got 5 hours and 43 minutes of sleep.

Immediately the anxiety kicks in: “That’s not enough. I need 8 hours. Today is going to be terrible.”
Sound familiar?

The “8 hours of sleep” rule is one of the most deeply ingrained beliefs in our culture — and one of the most misunderstood. For many people with insomnia, this belief doesn’t just cause anxiety. It actively makes their sleep worse.

In this article, we look at what the science actually says about sleep duration, why the “8 hour rule” is more complicated than you’ve been told, and why obsessing over sleep hours can become part of the problem.

Where Did the “8 Hours” Rule Come From?

The recommendation to sleep 8 hours per night has been repeated so often that most people assume it’s a hard biological requirement — like needing a certain number of calories to survive.

In reality, the “8 hours” figure is a population average, not a universal prescription. It comes from studies measuring average sleep duration across large groups of adults. Like any average, it tells us what is typical — not what is optimal for any individual person.

The reality is that healthy sleep duration varies significantly from person to person, influenced by genetics, age, lifestyle, health status, and individual biology.

What Do Sleep Experts Actually Recommend?

The most authoritative guidance on sleep duration comes from the National Sleep Foundation and the American Academy of Sleep Medicine, both of which have reviewed hundreds of sleep studies to establish evidence-based recommendations.

Their guidance for adults is:

Notice that the recommendation is a range — not a fixed number. For most adults, anywhere between 7 and 9 hours is considered healthy. Some people genuinely function optimally on 7 hours. Others need closer to 9. Both are completely normal.

Are Some People Really “Short Sleepers”?

Yes — though they are rarer than people think.

Research has identified a small percentage of the population (estimated at around 1–3%) who carry a genetic variant that allows them to function optimally on just 6 hours or less of sleep per night — without any apparent health consequences.

These are known as “true short sleepers” and their ability is genuinely genetic — not a matter of willpower or habit.

However — and this is important — most people who believe they are short sleepers are actually chronically sleep-deprived and have simply adapted to functioning in that state. They’ve forgotten what it feels like to be truly rested. If you are regularly sleeping 5–6 hours and relying on caffeine to get through the day, you are most likely sleep-deprived, not a genetic short sleeper.

Why Sleep Quality Matters More Than Sleep Quantity

Here is something that often surprises people: the number of hours you sleep is less important than the quality of those hours.

Deep, consolidated sleep — where you cycle properly through all stages including deep slow-wave sleep and REM sleep — is far more restorative than a longer period of fragmented, shallow sleep.

This is why someone who sleeps 6.5 hours of high-quality, uninterrupted sleep can feel more refreshed than someone who spends 9 hours in bed but wakes repeatedly throughout the night.

It’s also why time in bed is not the same as time asleep. Many people with insomnia spend 8, 9, or even 10 hours in bed — but their actual sleep time is far less. Spending more time in bed does not produce more sleep. In fact, it often makes insomnia worse (more on this below).

The Signs You’re Not Getting Enough Quality Sleep

Rather than fixating on hours, it’s more useful to assess how you feel and function. Signs that your sleep is not adequate include:

• Feeling unrefreshed upon waking most mornings
• Relying on an alarm clock to wake up (your body hasn’t naturally completed its sleep need)
• Needing caffeine to function in the morning
• Feeling sleepy during the day, particularly in the early afternoon
• Difficulty concentrating or making decisions
• Feeling irritable, emotional, or overwhelmed more than usual
• Falling asleep very quickly when you have the opportunity (within 5 minutes suggests significant sleep deprivation)

If you’re experiencing several of these regularly, your sleep quality or quantity may need attention.

The Dangerous Myth: “I Need to Spend More Time in Bed to Sleep More”

This is one of the most common and counterproductive beliefs we encounter at SynapReset Insomnia Therapy in Brisbane.

When people struggle with insomnia, the instinctive response is to go to bed earlier, stay in bed later, and nap during the day — trying to “catch up” on lost sleep.

Unfortunately, this strategy almost always backfires. Here’s why:

Your body has a sleep drive — a biological pressure to sleep that builds throughout the day the longer you are awake. Think of it like hunger: the longer you go without eating, the hungrier you become.

When you spend excessive time in bed awake, you:

• Dilute your sleep drive, making it harder to fall and stay asleep
• Train your brain to associate bed with wakefulness and frustration
• Fragment your sleep across a longer period rather than consolidating it
• Reinforce the anxiety cycle around sleep

One of the most effective techniques in CBTi — Sleep Restriction Therapy — works by temporarily reducing time in bed to match actual sleep time. This is poorly named as very rarely does it actually reduce real sleep time. In reality it reduces frustrating hours of wakefulness in bed while consolidating sleep, improving overall sleep quality and breaking the cycle of wakefulness. Most clients find it the most challenging — and most transformative — part of treatment.

What About Sleep Tracking Apps?

Sleep tracking apps and wearable devices have become enormously popular — and for some people, enormously anxiety-inducing.

While these tools can provide useful general information, they have significant limitations:

• Consumer-grade devices are not clinically accurate at measuring sleep stages
• They frequently misclassify light sleep as wakefulness, leading people to believe they slept less than they did
• Checking your sleep score first thing in the morning can set a negative tone for the entire day — regardless of how you actually feel
• For people with insomnia, sleep tracking often becomes a source of increased anxiety rather than helpful insight

There is even a recognised pattern called orthosomnia — a preoccupation with achieving perfect sleep tracker data that itself causes insomnia and sleep anxiety.

If you find yourself anxiously checking your sleep data every morning, consider whether the app is helping or harming your relationship with sleep.

How Much Sleep Do Older Adults Need?

Sleep naturally changes with age — and many older adults worry unnecessarily about these changes.

It is normal for older adults to:

• Sleep slightly fewer total hours (7–8 hours rather than 7–9)
• Experience lighter sleep with more brief awakenings
• Wake earlier in the morning
• Feel sleepy earlier in the evening

These changes are part of normal ageing and do not necessarily indicate insomnia. However, when sleep difficulties are causing significant distress or impacting quality of life, CBTi is highly effective for older adults — and is particularly recommended over sleep medications, which carry greater risks in older age groups.

So How Many Hours Do YOU Need?

The honest answer is: it depends on you.

Rather than targeting a specific number of hours, focus on:

1. How you feel — Do you wake feeling reasonably refreshed most mornings?

2. How you function — Can you get through the day without excessive fatigue or reliance on caffeine?

3. Sleep quality — Is your sleep mostly consolidated, or fragmented and restless?

If you’re consistently sleeping within the 7–9 hour range, waking feeling reasonably rested, and functioning well during the day — your sleep is likely adequate, regardless of what a sleep tracker tells you.

If you’re struggling with chronic insomnia — difficulty falling asleep, staying asleep, or waking too early — the number of hours is less important than addressing the underlying issue.

Getting the Right Help

At SynapReset Insomnia Therapy in Brisbane, we work with adults across Australia who are struggling with all forms of insomnia — including those who have been worrying about sleep hours for years.

Our personalised CBTi program addresses not just the behavioural side of insomnia, but the anxiety and unhelpful beliefs around sleep that often keep people stuck. Most clients begin seeing meaningful improvements within the first few weeks.

We offer a complimentary 15-minute phone consultation to discuss your sleep concerns and determine whether our program is right for you.

Available in Brisbane and Australia-wide via Telehealth — no referral needed.

📞 Call us: 0461 571 392

📧 Email: contact@synapreset.com.au

🌐 Website: www.synapreset.com.au

Andrew Heathcock is a sleep therapist and advanced practice pharmacist with 20 years of experience in healthcare. He is a certified CBTi Level 1 Practitioner and founder of SynapReset Insomnia Therapy, Brisbane.

Related Articles:

Why Can’t I Sleep Through the Night? What Science Actually Says

What is CBTi and How Does it Treat Insomnia?

Sleep Medications vs CBTi — Which Works Better?

5 Signs You Have Sleep Maintenance Insomnia

© 2026 SynapReset Insomnia Therapy, Brisbane QLD Australia