The Sleep Hub
Sleep: The Foundation Every Other Health Goal Sits On
Written & reviewed by Dr. Nigel Nulty
Functional Health/Medicine Consultant & Chiropractor · 25 years clinical experience
Last reviewed June 2026 · Educational content — not a substitute for medical advice
Adults generally need 7–9 hours of sleep, yet a large share of Australians regularly get less — and poor sleep is linked with lower mood, impaired concentration, weight gain and higher long-term risk of cardiovascular and metabolic problems.
The good news: sleep responds quickly to the right inputs. Most people don't have a 'sleep problem' — they have a light, timing, caffeine or stress problem that shows up at 2am.
The four levers that shape sleep quality
- Light — morning daylight anchors your circadian rhythm; bright screens late at night delay it.
- Timing — a consistent wake time (even weekends) matters more than a consistent bedtime.
- Chemistry — caffeine has a ~5-hour half-life; alcohol fragments the second half of the night.
- Pressure & stress — an unresolved to-do list at 9pm becomes a 2am wake-up. A 'shutdown ritual' helps.
A simple 2-week sleep reset
This is the entry sequence from our Better Sleep programs — general education, not personal medical advice:
- Fix your wake time and get 10 minutes of outdoor light within an hour of waking.
- Last caffeine before midday; last large meal 3 hours before bed.
- Dim the house and screens for the final hour; keep the bedroom cool and dark.
- If you're awake more than ~20 minutes at night, get up and read something dull in low light rather than lying frustrated.
When snoring and daytime sleepiness need investigation
Loud snoring, witnessed pauses in breathing, morning headaches or severe daytime sleepiness can indicate sleep apnoea, which is common and treatable — talk to your GP about assessment. Habit changes help most sleepers, but they don't treat an airway problem.
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Frequently asked questions
How much sleep do I actually need?
Most adults function best on 7–9 hours. The practical test: if you need an alarm to wake, rely on caffeine to function, and crash on weekends, you're likely under-slept.
Do sleep supplements work?
Magnesium and glycine have modest supportive evidence for some people, and melatonin can help with timing shifts — but none outperform consistent light, timing and caffeine habits. Check with your practitioner first.
Why do I wake at 3am?
Common contributors include alcohol, late eating, blood sugar dips, unprocessed stress and normal ageing changes in sleep architecture. A steady evening routine and earlier caffeine cut-off resolve many cases; persistent insomnia deserves professional review.
Sources & further reading
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