What Good Sleep Looks Like
What Good Sleep Looks Like
A grounded guide to sleep quality, not perfection
Why Sleep?
In the words of Ace Ventura 'Because I gotta'. The subject of sleep, or at least ‘good sleep’ has interested me for a long time. But probably more so after I gave up alcohol. Sleep just got better. For years, sleep has been talked about as a number. Seven hours. Eight hours. Track it. Optimise it. Fix it.
But I’m learning that it doesn't really work that way. Good sleep isn’t a target you hit once and move on from. It’s a process, shaped by how you behave, the environment, stress, and the consistency you can maintain over time.
And for most people, especially those juggling work, training, and family life, the problem isn’t a lack of effort; I think it’s safe to say we’ve moved on from the days of less-is-best! No longer proudly announcing you can ‘survive’ on four hours of sleep.
So I thought it was worth a deeper look at what “good sleep” actually means.Recent work from leading sleep researchers, including Matthew Walker, Andrew Huberman, and behavioural sleep specialists like Sophie Bostock, has shifted the conversation away from quick hacks and towards fundamentals.
I’m creating this Sleep Hub to compile the latest learnings and lay down easily followed foundations. In the following sections, I’ll provide practical advice based on the latest research to improve sleep quality.
Good Sleep Is About Quality, Not Just Duration
Anyone with a modern smartwatch will already know that sleep happens in cycles. Each night, your brain alternates between non-REM and REM sleep, repeating the cycle roughly every 90 minutes. But how do these cycles differ?
- Deep non-REM sleep supports physical repair, immune function, and hormone regulation
- REM sleep is critical for memory, learning, emotional processing, and creativity
A full night of sleep isn’t simply “more is better”. Fragmented sleep, alcohol intake, stress, or inconsistent schedules can shorten or blunt these stages, even if total hours look fine on paper (ok, your tracker).This is why two people sleeping seven hours can wake feeling completely different.It seems to me that good sleep is sleep that allows these stages to happen with minimal disruption.
Consistency Trumps Perfection
One of the strongest emerging themes I’ve noticed time and again is the importance of sleep regularity.
Going to bed and waking up at roughly the same time each day appears to be as important, if not more so, than total sleep duration. Irregular sleep schedules confuse the body’s internal clock, increasing stress hormone release and reducing sleep depth.
This matters for real life. You do not need perfect nights. You need predictable ones.A late night doesn’t “ruin” your sleep health. Repeated inconsistency does.
Your Nervous System Sets the Tone
Many people describe feeling “tired but wired” at night; I consider myself one of them. This is not a failure of willpower. It is a nervous system stuck in a heightened state.
Chronic stress, mental load, and constant stimulation keep the body in a state of sympathetic arousal. Sleep requires the opposite: parasympathetic dominance.
So, how do we switch from a busy life to proper deep rest at night?
Interestingly, modern sleep specialists increasingly frame sleep as a daytime problem rather than a nighttime one.
- High caffeine late in the day
- Intense training without adequate recovery (notice that elevated heart rate hours later?)
- Mental work that never truly switches off
- Evening light exposure from screens and indoor lighting
All of these tell the nervous system to stay alert. It turns out that “Good Sleep” actually begins hours before you get into bed.
Alcohol and Sleep: The Misunderstood Relationship
Wondering why sleep scores went up consistently for around two weeks after giving up alcohol (11 months ago, go me!) I had to investigate.
Alcohol is still widely believed to “help” sleep because it speeds up sleep onset. In reality, it significantly reduces REM sleep, fragments the second half of the night and increases early waking.
Sleep researchers are increasingly clear on this point: alcohol creates sedation, not restorative sleep. For people who train regularly, manage higher stress levels, or try to improve cognitive performance, this distinction matters. Quite simply, you can’t function optimally and drink alcohol, period.
What Good Sleep Feels Like (The Human Test)
Good sleep is not about waking up euphoric. Although it's great to wake up knowing you've slept all the way through and it's been a solid nights sleep - or is that just me! It's more about your baseline resilience.
Signs your sleep is working for you:
- You wake without dread or heavy fog most days
- Energy is relatively stable across the day
- You can handle stress without overreacting
- Training feels recoverable, not cumulative
- Concentration returns quickly after interruptions
- You look forward to going to bed
Poor sleep often shows up first in mood, patience, and decision-making, not just tiredness.
Tracking Can Help, But It Can Also Hurt
Most of us nowadays love a wearable device, or is that wear a lovable device? Either way, whether it’s an Oura, Garmin, Apple, Whoop, Coros, or whatever, they’ve improved awareness of the importance of your sleep.
But they can also create anxiety around “bad” sleep scores. This is known as orthosomnia, becoming stressed about sleep itself. This blew my mind, being stressed about being stressed, where does it end!
Joking aside, sleep experts increasingly advise using data as context, not judgment. If tracking helps you spot patterns, use it. If it makes you anxious, step away.
The body is still the best signal. It’s about how you feel subjectively throughout the day.
A More Realistic Definition of Good Sleep
A more grounded idea of what good sleep is that it’s not flawless, uninterrupted, or perfectly measured. I’d now say that good sleep is:
- Consistent more often than not
- Deep enough to support recovery
- Supported by daytime behaviour
- Protected, not forced
It adapts to real life rather than fighting it, so you feel well-rested and ready to perform at the levels you know you can.
Why This Matters
It matters as sleep underpins almost everything we care about: physical performance, mental clarity, emotional stability, and long-term health.
Before supplements, routines, devices, or tools, it’s essential to understand what you’re aiming for.
Now that you understand what good sleep means to you, the next logical step is to grasp why modern life makes good sleep harder than it should be.
Up Next
Why We Sleep So Poorly in Modern Life (And Why It’s Not Your Fault)
