Once a month the TeamCPNZ coaches sit down together, sharing experiences, discussing the latest research, and talking through what’s actually making a difference for the athletes they work with every day. Real conversations. No fluff.
The Coaches Resource Series turns the best of those conversations into something you can use. Collective knowledge, distilled into practical takeaways — because better-informed athletes get better results.
This month: sleep. The most powerful recovery tool you already have. Read on.
THE SLEEP OPPORTUNITY : WHY EIGHT HOURS CHANGES EVERYTHING
Sleep is the most underrated performance lever in endurance sport. Here’s what the research says and how to actually apply it to help your performance
TeamCPNZ Coaches Resource · May 2026
Training load, nutrition, and race-day strategy take up most of the coaching conversation. But sleep is the recovery pillar that quietly determines whether all of that work actually sticks. Athletes who shortchange sleep aren’t just tired – they’re limiting adaptation, increasing injury risk, and undermining every other investment they’ve made in their training.
Reframe: The Sleep Opportunity
Most athletes think about sleep as something that either happens or doesn’t. A more useful frame is the sleep opportunity – the deliberate act of giving your body the conditions it needs to do its work.
The research is clear: virtually everyone needs a minimum of eight hours, and athletes in active training likely need more. The common belief that six or seven hours is “enough” is a coping story, not a performance strategy. You can function on less – but you won’t adapt, recover, or perform at your ceiling.
KEY PRINCIPLE
The goal isn’t to “sleep better” – it’s to give yourself eight hours lying down, lights out, eyes closed. Let the body do the rest. Removing the pressure to sleep perfectly is often what makes sleep improve.
Work backwards from the wake-up time. Getting up at 5am means lights out by 9pm. Getting up at 6am means in bed by 10pm. Non-negotiable.
The One Habit That Makes Everything Worse
Checking the clock during the night is one of the most counterproductive things an athlete can do – and almost everyone does it. Two things happen the moment you look at your phone at 2am:
- Blue light exposure: The screen suppresses melatonin and signals the brain to wake up, even briefly.
- Stress calculation: The brain immediately starts doing maths — “only four hours left” — and the anxiety that follows makes returning to sleep harder.
The fix: turn the phone face down, or keep it out of the room entirely. Waking overnight is normal. Lying still with eyes closed is still recovery – it doesn’t need to be labelled a problem.
Build a Sleep Routine That Works
Consistency is the most powerful sleep tool available – and it costs nothing. The body thrives on predictability. When sleep and wake times vary day to day, the circadian rhythm never fully settles, and sleep quality suffers regardless of duration.
- Same bedtime, every night: Regularity trains the brain to start winding down at a predictable time. Even on weekends, keeping variation under an hour makes a real difference.
- No exercise within 2–3 hours of bed: Exercise raises core temperature and cortisol – both need time to settle before quality sleep can begin.
- Avoid alcohol: Alcohol may help with falling asleep but fragments sleep architecture significantly – particularly REM. Using it as a wind-down tool trades short-term relaxation for poor recovery.
- Book over screen: Reading a physical book slows the mind, involves no blue light, and doesn’t carry the stimulation of social media or email.
- Warm shower before bed: The drop in core temperature after a warm shower mimics the natural temperature fall that triggers sleep onset.
- Cool, dark room: The ideal sleep environment is 18–20°C and as dark as possible. Blackout curtains are worth the investment. Small light sources – chargers, standby lights, curtain gaps – can disrupt sleep depth more than most people realise.
WORTH NOTING
As winter arrives, many people crank the heating – which pushes room temperature above the optimal sleep zone. A cooler room isn’t just comfortable preference; it’s physiologically important for reaching and sustaining deep sleep stages.
Supplements & Practical Aids
Lifestyle habits are the foundation – but for athletes who’ve got the basics right and want to go further, the following are worth knowing about:
- Magnesium Glycinate: The most sleep-relevant form of magnesium. There are dozens of variants – Glycinate specifically supports relaxation and sleep quality. Pure Sport Nutrition carries a reliable option.
- Tart Cherry & 5-HTP: A useful combination for supporting natural melatonin production and sleep depth. Available as a combined supplement alongside magnesium.
- Herbal sleep teas: Chamomile-style bedtime teas have a gentle relaxation effect and work well as part of a consistent wind-down routine.
- Weighted blankets: A 2–7kg blanket activates the parasympathetic nervous system through deep pressure – calming anxiety and supporting sleep onset. Try different weights; some people sleep under one all night, others use it only to relax under initially and then to remove.
- Grounding mats: Some athletes report significant benefit. Evidence is still developing, but downside risk is low and it pairs well with a weighted blanket for athletes with elevated baseline anxiety.
- Calm app (or similar): Guided body-scan meditations are effective for athletes whose brains stay switched on at bedtime. The goal isn’t to finish the meditation – it’s to redirect attention away from the day. Most people don’t make it to the end. That’s the point.
The Busy Brain Problem
One of the most common sleep barriers isn’t physical – it’s mental. A full life, training load, and late-night screen habits mean many people arrive at bedtime with a head full of unfinished business. Two strategies that consistently work:
- Pre-bed brain dump: Keep a notepad by the bed. Spend five minutes before sleep writing down anything that needs doing tomorrow. Once it’s on paper, the brain no longer needs to hold it. Even an unfinished list is enough to let go – it’ll be there in the morning.
- Audit the evening routine: Many athletes underestimate how long their pre-bed routine actually takes. Track what’s happening in the two hours before bed for a week – the patterns become obvious, and they’re usually fixable with small adjustments.
Coaching Shift Workers
Paramedics, nurses, doctors, and others on rotating shifts face a genuinely different challenge — one where standard sleep advice only partially applies. The key is building the training program around their recovery reality, not a fixed weekly template.
| WORKING WITH SHIFT WORKERS
• The first day after a night shift is typically a write-off for quality training – plan around it rather than fighting it
• The second day after a night shift is often the hardest – fatigue peaks here even after a full day’s sleep
• By day three, most athletes are ready for normal training again
• Ask athletes to track and annotate their own patterns – individuals vary significantly and they often know themselves better than any formula predicts
• Prioritise daylight exposure on tough days – the most effective circadian reset available
• On a depleted day: drop the Intensity first, then the duration. and if you are no good after 5mins just turn around and head home and put a line through the session (don’t try to catch it up). Pushing through on empty raises injury risk
• If stress and sleep disruption are severe, encourage a GP conversation – short-term support to reset is a legitimate option, not a last resort |
In Short..
Many athletes understand that sleep matters in theory but haven’t made it a real priority. Wearables have added complexity – some athletes are now anxious about their sleep data on top of everything else, which compounds the problem. The message is simple and actionable:
- Stop trying to sleep – start creating the opportunity: Eight hours in bed, dark, quiet, cool. That’s what’s controllable. The body does the rest.
- Don’t judge the night by the data: Sleep trackers measure proxies, not perfect truth. If you feel rested, you’re rested. Don’t let a device tell you otherwise.
- If you don’t have a great sleep: Get up get into the day, stick to the routine and give yourself another opportunity tonight. Sleep will come – your body will make sure of it.
- One change at a time: Overhauling a sleep routine overnight rarely works. Pick one habit – consistent bedtime, phone out of the room, cooler temperature – lock it in before adding the next.
- Sleep is training: The hours in bed are as important as the hours on the bike or trail. Without adequate sleep, the adaptation from training doesn’t fully happen – the work is literally wasted.
QUICK REFERENCE — SLEEP ESSENTIALS
| Clock-watching |
Phone face down or out of the room — time anxiety kills sleep |
| Consistency |
Same sleep & wake time daily — highest single-impact habit |
| Temperature |
18–20°C, blackout curtains — essential for deep sleep |
| Screens |
Off 30–60 min before bed — read a book instead |
| Notepad |
Write it down — the brain stops holding what’s on paper |
| Alcohol |
Disrupts REM significantly — avoid as a sleep aid |
| Magnesium |
Glycinate form — best option for sleep support |
| Weighted blanket |
2–7kg — calms nervous system at bedtime |
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