Why Sleep Hygiene Matters
Sleep hygiene refers to the set of habits and practices that support consistent, high-quality sleep. Poor sleep affects concentration, mood, immune function, and long-term health. The good news is that many sleep problems can be significantly improved with behavioural changes — no medication required.
Building a Consistent Sleep Schedule
Your body operates on an internal clock called the circadian rhythm. Going to bed and waking at the same time every day — including weekends — reinforces this rhythm and makes it easier to fall asleep and wake up naturally.
- Choose a wake-up time that works for your lifestyle and stick to it
- Work backwards from your wake time to set a target bedtime (most adults need 7–9 hours)
- Avoid "sleep debt" recovery through oversleeping on weekends, which can reset your clock
Optimising Your Sleep Environment
Your bedroom should signal to your brain that it's time to rest. Consider these adjustments:
Temperature
A slightly cool room — around 16–19°C (60–67°F) — supports the natural drop in core body temperature that occurs during sleep.
Light
Darkness triggers melatonin production. Use blackout curtains or a sleep mask if outside light is an issue. Avoid bright overhead lights in the hour before bed.
Noise
If noise is disruptive, consider earplugs, a white noise machine, or a fan. Some people find consistent background sound easier to sleep through than silence punctuated by sudden noises.
Managing Screen Time Before Bed
Screens emit blue light, which suppresses melatonin and signals to your brain that it's daytime. To reduce the impact:
- Avoid screens (phone, tablet, TV, computer) for at least 30–60 minutes before bed
- If you must use devices, enable blue light filters or night mode
- Avoid stimulating content — news, arguments on social media, or suspenseful shows — close to bedtime
What to Eat and Drink (and When)
| Habit | Effect on Sleep |
|---|---|
| Caffeine after 2pm | Can delay sleep onset; caffeine has a half-life of ~5 hours |
| Alcohol before bed | May help you fall asleep but reduces sleep quality and REM sleep |
| Heavy meals close to bedtime | Can cause discomfort and disrupt sleep |
| Herbal tea (chamomile, valerian) | May have mild calming effects for some people |
| Staying hydrated during the day | Reduces night-time wake-ups from thirst |
Wind-Down Routines That Work
A consistent pre-sleep routine cues your nervous system to shift into rest mode. Some effective wind-down activities include:
- Reading a physical book
- Light stretching or gentle yoga
- A warm bath or shower (the subsequent cooling of your body temperature is sleep-promoting)
- Journalling or writing a to-do list for the next day (to clear your mind)
- Breathing exercises or meditation
When to Seek Professional Help
If you've consistently practised good sleep hygiene and still struggle with sleep, it may be worth speaking to a doctor. Conditions like sleep apnoea, insomnia disorder, or restless leg syndrome often require professional assessment and specific treatment beyond lifestyle changes.
Start Small
You don't need to overhaul everything at once. Pick one or two habits from this list and practise them consistently for two weeks before adding more. Small, sustainable changes tend to produce the most lasting results.