Quick Answer

What is sleep hygiene?

Sleep hygiene refers to the environmental and behavioral habits that promote consistent, quality sleep — including consistent timing, dark/cool bedroom, screen limits, and pre-bed routines. Good sleep hygiene alone improves sleep onset by 42% and is the first-line recommendation before any sleep medication.

Sleep hygiene is the foundation of good sleep. It's not glamorous, but research consistently shows that fixing these basics resolves most sleep complaints without medication or supplements.

The Core Principles

1. Consistent timing - Same wake time 7 days/week (±30 minutes max) - Same bedtime (but only go to bed when genuinely sleepy) - This is the single most important factor — it synchronizes your circadian rhythm

2. Dark environment - Blackout curtains or eye mask - No standby lights (cover LEDs with tape) - Darkness signals melatonin release; any light above 1 lux can suppress it

3. Cool temperature - Bedroom at 60-67°F (15-19°C) - Core temperature must drop for sleep onset - Layer bedding so you can adjust without fully waking

4. Quiet environment - Earplugs or white noise machine - White noise masks sudden sounds (which cause micro-arousals even if you don't remember waking)

5. Bed = sleep only - No working, scrolling, or watching TV in bed - This trains your brain: bed means sleep, not stimulation - If you can't sleep after 20 minutes, get up and do something boring until sleepy

Sleep Hygiene by Chronotype

Lions: Your hygiene is naturally good. Focus on: not over-scheduling evenings and declining late social events without guilt.

Bears: Focus on: consistent bedtime (your flexibility makes you prone to "one more episode" syndrome) and limiting weekend sleep-in to 60 minutes.

Wolves: Focus on: aggressive evening light reduction (your delayed clock needs every advantage), no screens after 10 PM, and warm shower 90 minutes before target bedtime.

Dolphins: Focus on: stimulus control (leave bedroom if awake >20 min), no clock-watching (turn clocks away), and extended wind-down routine (90 min minimum).

The 10-3-2-1 Rule

A practical framework: - 10 hours before bed: No more caffeine - 3 hours before bed: No more food or alcohol - 2 hours before bed: No more work - 1 hour before bed: No more screens

What Good Sleep Hygiene Looks Like

Evening routine: - Dim lights after sunset (warm bulbs, 30% brightness) - Light evening activity (reading, stretching, conversation) - Warm shower or bath 90 minutes before bed - Bedroom prep: cool, dark, devices charging outside bedroom - Consistent relaxation ritual (5-10 min meditation, breathing, or body scan) - Into bed only when eyes feel heavy

When Sleep Hygiene Isn't Enough

If you've maintained perfect sleep hygiene for 4+ weeks and still: - Take over 30 minutes to fall asleep regularly - Wake for extended periods at night - Feel unrefreshed despite adequate hours

Then consider: CBT-I (cognitive behavioral therapy for insomnia), chronotype misalignment, or an underlying medical condition. Sleep hygiene is necessary but not always sufficient.

Our free diagnostic identifies your chronotype and generates a personalized sleep hygiene protocol — including exact timing for each step — in under 2 minutes.