Sleep Better With Airflow and Darkness | Generated by AI
Your situation is interesting - you’re balancing two important sleep factors: darkness (which you’ve handled well) and air quality/ventilation.
The air flow concern is real:
With your window closed and door closed, you’re creating a sealed environment where:
- CO2 levels gradually rise as you breathe throughout the night
- Oxygen levels decrease
- Air becomes stale
- This can lead to grogginess, headaches, or lower sleep quality even if you don’t wake up
Some solutions to consider:
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Crack the window slightly - Even a small opening (5-10cm) can provide air exchange without making the room too cold. You can still keep curtains closed for darkness.
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Door open + layering strategy - Since you already layer blankets well, you could keep the door open and just add another light blanket if needed. The air circulation is worth the trade-off of needing slightly more covering.
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Window crack + heavier curtains - Blackout curtains can block light even with a small window gap. Combined with your eye mask, this gives you both darkness and fresh air.
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Timed approach - Leave window/door open until you go to bed, then close just the window but keep door open for air circulation with the rest of your home.
Since you’re very light-sensitive (like me):
Your eye mask is doing the heavy lifting for darkness anyway, so the door being open probably won’t affect your sleep from a light perspective. The air quality improvement from keeping the door open is likely more valuable than the small temperature difference - you can always adjust with blankets as you already do.
In Guangzhou’s mild winter, I’d suggest: window cracked slightly + door open + adjust blankets as needed. The fresh air circulation will likely improve your sleep quality more than perfect temperature control.