Our sleep quality is an important factor in healthy aging, and one of the easiest aspects of sleep to modify is your bedroom environment, especially temperature.
- Many adults do not get enough quality sleep because of work, family obligations, and other life demands.
- Poor sleep has been linked to a variety of health problems and may influence how we age over time.
- Sleep is a modifiable lifestyle factor, meaning improvements in sleep habits can potentially support long-term health.
- Bedroom temperature plays a major role in sleep quality.
- As evening approaches, your body's core temperature naturally decreases to help prepare for sleep.
- A cooler sleeping environment supports this process by making it easier for your body to release heat.
Most sleep experts recommend keeping the bedroom around 60–67°F (15.5–19.5°C), though individual preferences vary. If you're too cold or too warm, adjusting bedding, clothing, fans, or the thermostat can help you find the temperature that allows you to fall asleep and stay asleep comfortably.
The body follows a 24-hour internal clock called the circadian rhythm. As bedtime approaches, your brain signals your body to prepare for sleep by:
- Releasing the hormone melatonin
- Lowering your core body temperature
- Slowing certain metabolic processes
A cooler environment helps this natural temperature drop occur more easily. When your bedroom is too warm, your body has to work harder to shed heat, which can:
- Make it harder to fall asleep
- Increase nighttime awakenings
- Reduce deep sleep and REM sleep
- Leave you feeling less rested the next day
What Happens If the Room Is Too Cold?
Extremely cold temperatures can also interfere with sleep. You may:
- Wake up feeling uncomfortable
- Experience muscle tension or shivering
- Have difficulty staying asleep
The goal is not a cold room but a comfortably cool one.
Tips for Creating an Ideal Sleep Environment
- Use breathable bedding made from cotton, linen, or moisture-wicking fabrics.
- Wear lightweight sleepwear if you tend to overheat.
- Use a fan to improve air circulation.
- Avoid heavy meals, alcohol, and intense exercise close to bedtime, as they can raise body temperature.
- If you get cold easily, add layers of blankets rather than raising the room temperature significantly.
Our sleep is a key contributor to overall health and healthy aging. Since many adults struggle with sleep, focusing on factors within our control—such as bedroom temperature—can help improve sleep quality. Because the body's temperature naturally drops at night, maintaining a cool sleeping environment supports this process, making it easier to fall asleep, stay asleep, and potentially promote better long-term health.
Therefore, better sleep supports healthier aging, and one of the simplest ways to improve sleep is to keep your bedroom comfortably cool.
