After a long day, the thing you most want to do is sleep. But sometimes, even when you’re exhausted, sleep isn’t as good as you’d like. You might be well-covered or wear warm clothes, yet still not sleep well.
Did you know there’s a strange habit or tip that can improve your sleep quality? What is it?
Sleep Secret: Slightly Cool Room (15-19°C)
Why exactly this range?
Your body needs to drop its core temperature by 0.5-1°C to start natural sleep. A moderately cool room (15-19°C) helps your body shed heat efficiently, sending the signal “Time to sleep!” to your biological clock.
What actually happens in your body:
✅ Deeper sleep: Up to 30% more slow-wave deep sleep, responsible for tissue repair and memory enhancement.
✅ Better fat burning: Mild activation of brown adipose tissue (BAT) to generate heat, burning ~50 extra calories overnight.
✅ Growth hormone: Secreted at all life stages (though quantity and role vary by age), released in larger amounts during slow-wave deep sleep, and moderate coolness increases the depth of this phase.
It is also possible
- 🔹 Crack a window slightly (if possible) for ventilation + cooling
- 🔹 Use a light cotton sheet + removable blanket
- 🔹 Light cotton socks if feet get cold (improves blood flow)
- ❌ Avoid heavy pajamas or electric blankets (they raise body temperature)
Remember that we are in the winter season, so the environment should not be too cold to avoid fatigue or catching a cold. What is meant here is to keep the atmosphere comfortable and gentle for you.
In the end, I wish you a restful sleep and sweet dreams.
