The Complete Sleep Hygiene Checklist (12 Habits)
"Sleep hygiene" sounds like a buzzword, but it's just the boring, repeatable stuff that decides whether tonight's sleep is good or garbage. Here are a dozen habits, ranked by how much they tend to matter.
The big three (do these first)
- Consistent schedule. Same wake time every day is the single strongest anchor for your clock.
- Dark, cool room. Aim for a bedroom around 18–20°C (65–68°F) and as dark as you can make it.
- No late caffeine. Caffeine's half-life is ~5–6 hours; a 4 p.m. coffee is still half in you at 10 p.m.
The middle six
- Morning light. 10–20 minutes of sunlight soon after waking.
- Wind-down hour. Dim screens, lower lights an hour before bed.
- Reserve the bed for sleep. No laptops, no scrolling.
- Cut evening alcohol. It helps you fall asleep then fragments sleep later.
- Regular exercise. Earlier in the day beats late-night workouts.
- Limit fluids late. Fewer 3 a.m. bathroom trips.
The last three (nice-to-have)
- A consistent pre-sleep ritual (tea, stretch, journal).
- Magnesium glycinate if you're short on it.
- A white-noise or fan for steady background sound.
Stuck awake? Try these fall-asleep tricks →
Frequently asked questions
What is sleep hygiene?
A set of behavioral and environmental practices that support consistent, restorative sleep. It includes schedule consistency, light exposure timing, screen curfew, bedroom environment, and limiting stimulants. It's the foundation of sleep medicine — and most people do poorly on 2-3 of these.
Does a warm bath before bed help?
Yes — counterintuitively. A warm bath 1-2 hours before bed raises skin temperature, then causes a compensatory drop in core body temperature that accelerates sleep onset by 10-15 minutes. The bath needs to be warm (38-40 °C), not scalding.
Should I avoid alcohol before bed?
Yes. Alcohol reduces sleep onset latency initially but fragments sleep in the second half of the night, suppresses REM, and worsens breathing. The "nightcap" effect is real but the cost is real too — a 2-3 drink evening typically costs you 1-2 hours of quality sleep.
Does exercise before bed hurt sleep?
Moderate exercise within 1 hour actually improves sleep onset for most people. High-intensity exercise within 30 min of bed can delay sleep onset by 15-30 min. If you train late, finish with a 10-min cool-down and you'll likely be fine.
Is it OK to use my phone in bed?
Not ideal, but if you must: night mode on, brightness down, hold the phone farther from your face (which reduces blue light exposure per area), and use a timer (e.g., 20 min of reading). The habit of "phone in bed = wakefulness" is the bigger problem than the light itself.
References
- American Academy of Sleep Medicine. (2021). Healthy Sleep Habits. sleepeducation.org.
- Centers for Disease Control and Prevention. (2022). Tips for Better Sleep. cdc.gov.
- NHS. (2023). Sleep and tiredness — Tips to aid sleep. nhs.uk.