Sleep Optimisation Guide
Sleep Optimisation Guide
Six levers to deeper sleep over the next 90 nights. A short guide, built to be used rather than read once, ordered by how much each one gives back for the effort it takes.
Conquer Every Day
Before we start
This guide is general information only and is not a substitute for professional medical advice. Everyone is different. Speak to your doctor before making significant changes to your lifestyle or starting any new supplement, and particularly if you have a diagnosed sleep, respiratory or mental health condition.
Welcome to your 90 nights
Here is the honest version. No gummy overrides a hot bedroom, a wake time that drifts by two hours on weekends, or a phone at full brightness at 11pm. What a gummy can do is give you a consistent signal to start winding down, every night, at the same time.
That consistency is the point. The Sleep Health Foundation reports that between 33 and 45 percent of Australian adults get inadequate sleep. Around 29 percent have made errors at work because of sleepiness, and one in five has nodded off at the wheel. Most of those people are not broken. They are just running a set of habits that quietly work against them.
So this guide is not a list of hacks. It is six levers, ordered so the cheapest and highest-yield ones come first, plus a 90 night plan for actually bedding them in.
Levers, in order
The first two cost nothing at all.
Nights to bed it in
Long enough for it to stop feeling like effort.
Gadgets required
In fact, the changes that move the needle most cost nothing at all.
Jump to
Understanding sleep
You do not sleep at one depth all night. You move through cycles of roughly 90 to 110 minutes, four to six times a night, and each cycle is built differently depending on when it happens.
Deep sleep is front loaded into the first half of the night. REM is weighted towards the last few hours before you wake. That single fact explains most of what people find confusing about their own sleep.
Light sleep
N1 and N2
About half the night. Easy to dismiss as filler, but this is where sleep spindles fire and where a lot of memory consolidation happens.
Deep sleep
N3, slow wave
Between a seventh and a quarter of the night, almost all of it early. Roughly 70 percent of daily growth hormone in young men is released in a pulse tied to the first deep sleep period.
REM sleep
Dreaming
About a quarter of the night, loaded into the early morning. Cut your night short at the front end and you lose deep sleep. Cut it short at the back end and you lose REM.
Cycles get lighter as the night goes on
Your first cycle is the heaviest. By the fourth or fifth, deep sleep has largely dropped out and REM has taken its place. This is why the last two hours feel dreamier and lighter, and why waking naturally near the end of a cycle feels so different to an alarm at 4am.
Brief wakings are normal
Everyone surfaces briefly between cycles. Most people do not remember it. Noticing a waking is not the same as having a problem, and treating every remembered waking as a fault is one of the fastest ways to make sleep worse.
The bit nobody can prove yet
You will have seen the claim that sleep flushes waste out of your brain. The glymphatic idea, that cerebrospinal fluid clears metabolic waste more efficiently during sleep, is promising and genuinely interesting. It is also still disputed, and the strength of the effect in humans is not settled. Anyone telling you sleep flushes Alzheimer's out of your brain is ahead of the evidence.
Why this matters
A short night is not evenly short. Losing two hours off the end of your sleep does not shave a bit off everything, it takes a disproportionate bite out of REM. Losing two hours off the front takes deep sleep instead.
And while we are here: the line that sleep before midnight counts double has no basis. What matters is that your sleep is long enough and lands at roughly the same time each night.
How much do you actually need?
The Sleep Health Foundation puts the adult range at 7 to 9 hours. The American Academy of Sleep Medicine and the Sleep Research Society set a floor of 7 or more for adults.
Genuine short sleepers exist, but they are far rarer than the number of people who believe they are one. Among Australians sleeping under 5.5 hours, 76 percent reported frequent daytime impairment. Most people who think they have adapted have simply lost the ability to notice.
Six signs worth paying attention to
- Wired at night, wrecked in the morningYou get a second wind at 10pm and feel worst in the first hour after waking. Usually a timing problem rather than a duration one.
- The 3am wake-upFalling asleep is fine, staying asleep is not. Often tied to alcohol, a warm room, or a mind that never got emptied before bed.
- Hours in, nothing backEight hours in bed and you still wake unrefreshed. This one points at undiagnosed sleep apnoea more often than people expect.
- Weekend catch-up sleepIf you need to sleep two extra hours on Saturday, you are carrying a debt from the week rather than choosing a lie-in.
- The 2pm wallA genuine crash rather than a mild post lunch dip, every day, at the same time.
- Sleep only happens with helpYou cannot get to sleep without a drink, a screen playing, or something stronger. Worth being honest about.
One caution before you start measuring
There is a real condition called orthosomnia, where chasing perfect sleep scores makes sleep worse. Tracking is fine as a rough signal. Do not let a number in an app become the thing you are anxious about at 11pm.
Your first 90 nights
Nothing here works in a week. Here is roughly what to expect, and what to judge yourself on at each stage.
Nights 1 to 7
Build the scaffolding
Fix the wake time, get outside in the morning, take the gummies at the same time each night. Do not expect to feel different yet. You are laying track, not driving on it.
Nights 8 to 30
The routine starts running itself
The first thing that usually improves is not how long you sleep, it is how solid it feels. Consolidation comes before duration. Fewer wakings, less time staring at the ceiling.
Nights 31 to 60
Consistency compounds
Missing one night is irrelevant. Missing a week sets back the automaticity, which is the whole thing you are building. Protect the streak more than any single night.
Nights 61 to 90
It becomes just what you do
In habit research the median time for a behaviour to feel automatic is around two months. By here, the routine should require noticeably less willpower than it did in week one.
Straight up
That habit research measures automaticity, not product efficacy, and the original study found a range from under three weeks to over six months. Some people will feel settled in a fortnight. Some will take longer than 90 nights. Neither means it is not working.
Start at the top.
Give each one a fortnight.
Let's get into it.
Lock your wake time
If you only do one thing from this guide, do this one. It is free, it takes no time, and the evidence behind it is stronger than almost anything else here.
Your body clock does not care what time you got into bed. It anchors to the time you get up and see light. Hold the wake time steady and the sleep time gradually organises itself around it. Let the wake time float and everything downstream floats with it.
The evidence
A UK study of around 61,000 adults wearing wrist trackers found the most regular sleepers had 20 to 48 percent lower mortality risk than the least regular. Regularity predicted mortality better than duration did.
A separate study of 72,000 adults found that hitting the recommended hours did not cancel out the cardiovascular risk that came with irregular timing. Getting eight hours at wildly different times is not the same as getting eight hours.
Pro tips
- Anchor the wake, not the bedSet one alarm, for getting up, and stop trying to force a bedtime. Sleep pressure will pull the bedtime into place within a week or two.
- Keep weekends within an hourYou do not have to live like a monk. Staying within an hour of your weekday wake time keeps the clock intact while still letting you have a life.
- Get up even after a bad nightSleeping in to make up for a rough night is what turns one bad night into a bad fortnight. The one exception is if you are driving or operating machinery, where being safe beats being consistent.
- Beware the Sunday night trapTwo late nights plus two lie-ins is a two hour time zone shift, done to yourself, every single weekend. That is what Sunday insomnia actually is.
- Nap early, nap shortUnder 30 minutes, before mid afternoon. Longer or later and you are borrowing from tonight.
- Shift work changes the rulesIf your roster moves, you cannot anchor a wake time the same way. Anchor what you can, protect darkness on the way home, and be realistic about the rest.
Get the light right
Light is the strongest input your body clock has, and most of us have it exactly backwards. Too little in the morning, far too much at night.
A typical office sits at around 150 to 200 melanopic lux. The consensus daytime target is 250 or more. Meanwhile, a living room at 9pm is delivering enough light to hold melatonin down for hours.
The evidence
A camping study, removing artificial light entirely, shifted every circadian marker roughly two hours earlier within a week. Not because camping is magic, but because the light finally matched the sun.
Ordinary room light, under 200 lux, cuts melatonin by around 71 percent and shortens the production window by about 90 minutes. Half the maximum effect of a 9,000 lux light is reached at only about 100 lux. Your brain is far more sensitive to dim light than it feels.
Pro tips
- Get outside earlyReasonably soon after waking, for as long as you can manage. On a grey day, stay out longer. Even overcast daylight beats anything indoors by a distance.
- Take the meeting outsideThe easiest way to hit a daylight target is to stop treating daylight as a separate task and attach it to something you were doing anyway.
- Dim the house after dinnerOverhead lights off, lamps on. This one change does more than most people expect, and it costs nothing.
- Turn the brightness down, not just the blueNight mode shifts the colour but leaves the intensity. Intensity is doing most of the work. Drop the screen brightness properly.
- Skip the blue-blocking glassesA Cochrane review found no reliable evidence that blue-blocking lenses improve sleep. Save the money and turn the lights down instead.
- Sleep in actual darknessUnder 1 lux is the target. Standby LEDs, a streetlight through thin curtains and a phone face up on the bedside table all count.
Build the cave
To fall asleep and stay asleep, your core temperature has to drop. Everything about the bedroom either helps that or fights it.
The good news is the window is wider than the internet suggests. With normal bedding, sleep is largely unaffected anywhere between roughly 13 and 23 degrees. Above about 25 it starts to come apart, and humidity makes that considerably worse.
Ignore the false precision
You will see 18.3 degrees quoted as the perfect bedroom temperature. That number is a converted round figure being passed off as science. There is no single correct temperature, there is a broad comfortable range and a hard ceiling.
Pro tips
- Cool room, warm bedThe combination that works is a cool room with bedding warm enough to be comfortable. Warm feet help you dump heat through your extremities. Socks are not weak.
- Fix humidity, not just heatIn a muggy Australian summer, a fan that keeps air moving often beats dropping the aircon another two degrees.
- A warm shower about 90 minutes outA meta analysis of 17 studies found a warm shower or bath roughly 90 minutes before bed got people to sleep about 9 minutes faster. It works by driving heat out of the body afterwards.
- Make it properly darkBlockout curtains, tape over standby lights, phone out of the room or face down and across the room.
- Deal with noise honestlyIf there is noise you cannot remove, mask it consistently rather than tolerating it. Intermittent noise is far more disruptive than steady noise.
- Bed is for sleepWorking, scrolling and watching in bed teaches your brain that bed is a place to be alert. Take it back.
Win the last hour
The hour before bed decides more than the seven hours after it. Not because of anything mystical, but because that is the only window where your behaviour still has leverage.
Cognitive behavioural therapy for insomnia, CBT-I, is the only treatment the American Academy of Sleep Medicine strongly recommends for chronic insomnia. Across 20 trials it cuts time to fall asleep by around 19 minutes and time awake during the night by around 26 minutes, while adding only about 8 minutes of total sleep. Read that again: it barely lengthens sleep, it consolidates it. That is what actually makes a night feel good.
The five minute trick worth knowing
In one study, 57 adults spent five minutes at lights out either writing a to-do list for tomorrow or writing about what they had finished that day. The to-do list group fell asleep significantly faster. It is one study without replication, so hold it loosely, but it costs five minutes and a pen.
Pro tips
- Build a fixed sequenceThe same handful of actions in the same order every night. The content matters far less than the repetition. Your brain is pattern matching, not grading you.
- Let the gummies start the clockTake them as directed on the pack and treat that moment as the starting gun for the sequence. Same time, every night, and the rest of the routine hangs off it.
- Get tomorrow out of your headFive minutes, on paper, before you get in. Not on your phone.
- Slow the exhaleLonger out breath than in breath. Ignore the numbered patterns and the branded protocols, the mechanism is just the exhale.
- If you are awake, get upRoughly 20 minutes of lying there frustrated and you should leave the room, sit somewhere dim and dull, and go back when sleepy. Lying there teaches bed to mean awake.
- Screens are about content tooA calm show at low brightness is not the same as an argument in a comment section. What you are reading matters as much as the light coming off it.
The big picture
We are not going to pretend a gummy fixes a broken routine. If you have been lying awake three or more nights a week for three months or more, that meets the definition of chronic insomnia, and the right move is to ask your GP about CBT-I rather than to keep adjusting your evening.
Mind what you put in
Two substances do most of the damage, and almost everyone underestimates both of them.
Caffeine has a half life of roughly 5 hours, but the individual range runs from about 1.5 to 9.5 hours. At average clearance, a 3pm coffee still has about a quarter of the dose in you at midnight. Pooled data shows caffeine cuts total sleep by 35 to 45 minutes and eats into deep sleep specifically, while doing relatively little to REM.
The classic study is the uncomfortable one: caffeine taken 6 hours before bed cost participants over an hour of measurable sleep, and they largely did not notice. If you feel like caffeine does not affect your sleep, that is exactly what the data predicts you would say.
You do not know your dose
A survey of 97 Gold Coast espressos found caffeine content ranging from 25 to 214 milligrams. Same drink, same name, eight times the dose. Pre-workout formulas run from 111 to 387 milligrams, and energy drinks sit around 80 to 160.
Alcohol is a trade, not a shortcut
From around three Australian standard drinks, REM is disrupted and the second half of the night fragments. It also worsens snoring and sleep apnoea.
In one insomnia study, the sedative benefit was gone by the sixth night, and participants were then drinking roughly twice as much to chase it. It is a genuinely bad long term deal.
Pro tips
- Set a caffeine curfew and test itPick a cut off, hold it for two weeks, then judge. One or two nights tells you nothing.
- Watch the hidden dosesPre-workout, energy drinks, some teas, and anything you drank because it was there rather than because you wanted it.
- Treat a nightcap as a costNot a rule against it. Just be honest that you are buying a faster start in exchange for a worse second half.
- Leave a gap before bedA large meal too close to lights out makes lying down uncomfortable and reflux more likely.
- Eat earlier if reflux is a problemAnd sleep on your left side, which measurably reduces reflux episodes.
- Do not go to bed starving eitherA 12 month time restricted eating trial found no difference in sleep. The window is not the point, the comfort is.
Move and breathe
Exercise reliably improves how well people say they sleep. Objective measures barely shift. Both of those things are true at once, and the subjective one still counts.
Around 150 minutes a week of brisk activity is the target worth aiming at. On timing, four meta analyses found no meaningful disruption from evening exercise, which for years was the settled answer.
The exception that matters
A large Australian led study of more than 14,000 people found that maximal effort exercise finishing within two hours of bed delayed sleep onset by around 36 minutes and raised overnight heart rate. So: leave 3 to 4 hours after a genuinely hard session. Under two hours is the problem zone. A walk or an easy session at 8pm is not what this is about.
Red flags worth a GP visit
- Loud snoring or witnessed pausesIf someone has told you that you stop breathing, that is the single most important sentence in this guide for you.
- Unrefreshing sleepFull nights, no obvious cause, still wrecked.
- Morning headaches, or waking at night to urinateBoth are common and commonly missed signals.
- Drowsy drivingNot negotiable. Get it looked at.
- The Australian pathway is straightforwardYour GP can refer you directly for a Medicare funded home sleep study. You do not need to see a specialist first.
- No app diagnoses thisA watch that says you have low oxygen is a prompt to see a doctor, not a diagnosis.
The 90 night reset
Everything above, compressed into one page. Do these in order and do not add the next block until the one before it is running without thought.
Week 1 to 2
Non-negotiables
- Fix your wake time. Same hour, seven days, within an hour on weekends.
- Get outside reasonably soon after waking. Longer on grey days.
- Turn the overhead lights off after dinner and use lamps.
- Take your gummies at the same time every night, as directed on the pack.
Week 3 to 4
Build the cave
- Make the bedroom genuinely dark. Curtains, standby lights, phone out.
- Cool room, warm bedding, and manage humidity in summer.
- Sort out noise honestly rather than putting up with it.
- Bed is for sleep. Move the laptop and the scrolling somewhere else.
Week 5 to 8
Refine the inputs
- Move your last coffee earlier, and run it for two weeks before judging.
- Add two alcohol free nights midweek.
- Leave three to four hours between hard training and bed.
- Five minutes with a pen. Tomorrow's list, out of your head.
Week 9 to 13
Hold the line
- Keep the routine through travel, late nights and disruption.
- Take your gummies every night through to night 90.
- If you snore loudly, stop breathing in your sleep or wake unrefreshed, see your GP.
- If you have been lying awake three or more nights a week for three months, ask your GP about CBT-I.
- Judge the whole thing on how you feel at 3pm, not on a number in an app.
One last thing: judge it at 3pm
The measure that matters is not your sleep score. It is whether you get through the middle of the afternoon without hitting a wall, whether you wake up before the alarm, and whether the last hour of the night stopped being a fight. Chasing a perfect number is its own problem, and it has a name. Go by how the day feels.
Sleep deeper.
Conquer every day.
None of this is dramatic. It is ninety small, unremarkable nights, done in a row, until the thing you had to think about becomes the thing you just do.
enhancdperformance.com
This guide is general information only and is not a substitute for professional medical advice. Everyone is different. Speak to your doctor before making significant changes to your lifestyle or starting any new supplement, and particularly if you have a diagnosed sleep, respiratory or mental health condition.
