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Research: How Bedroom Temperature Significantly Impacts Sleep

Published January 5, 2026, 14:11
Research: How Bedroom Temperature Significantly Impacts Sleep

Scientific research indicates that bedroom temperature significantly impacts sleep quality. A cooler environment can contribute to deeper and more restful sleep, affecting the production of melatonin, the hormone that regulates the sleep-wake cycle. Melatonin is produced in greater quantities in dark and cool conditions, helping the body fall asleep more easily and remain in stable sleep stages. Additionally, lower temperatures may activate brown adipose tissue, which participates in heat production and energy consumption. Medical guidelines recommend maintaining a balanced temperature, with the World Health Organization suggesting a minimum sleep temperature of around 18°C, and European standards placing the ideal range around 20°C. However, excessively low temperatures may not be suitable for everyone, especially individuals with respiratory or circulatory problems. Overall, scientific data suggests that sleeping in a cool room can improve sleep quality and hormone regulation, as long as it is part of a broader healthy sleep routine.