▲Navien Mat (EMW721) (Photo courtesy of KD Navien)

[October 30, 2025] KD Navien announced that a recent research paper reported measurable improvements in sleep metrics associated with the use of Navien Mat.

A study titled Polysomnographic Evidence of Enhanced Sleep Quality with Adaptive Thermal Regulation, which was supported by KD Navien and conducted by Asleep, examined the positive impact of real-time temperature control technology on the sleep quality. In particular, this study gained recognition for its credibility by being published in “Healthcare,” a journal listed in the internationally prestigious SCIE (Science Citation Index Expanded) and published by MDPI (Multidisciplinary Digital Publishing Institute), an open-access academic publisher.

In the study, which was planned in collaboration with Asleep, which jointly developed the AI sleep solution for the Navien Mat, the sleep quality of 25 subjects was analyzed through polysomnography (PSG) under varying conditions over a three-month period from December 2023 to February 2024. The test was performed under three conditions: △not using the Navien Mat (hereinafter referred to as “natural sleep”), △using the Navien Mat while keeping the temperature consistent (33℃), and △using the Navien Mat with real-time temperature control by sleep stage (30℃ for REM sleep, 33℃ for deep sleep, and 36℃ before waking).

The “total sleep time” when using the Navien Mat with temperature control by sleep stage averaged 383 minutes, which was 27 minutes longer than that of natural sleep. As for “sleep efficiency,” it increased by 4.5% to 87.3%. In addition, the “rate of REM sleep,” which is light sleep that helps relieve stress and mental fatigue, improved by 3.1% to 20.8%. The “time taken to reach REM sleep” averaged 110 minutes, which was 32 minutes shorter than that of natural sleep, and “wakefulness after sleep onset (WASO),” which refers to the total amount of time awake after falling asleep, was 49 minutes, 9 minutes shorter than that of natural sleep. Moreover, the rate of deep sleep when the temperature of the Navien Mat was kept consistent averaged 8.1%. However, when the temperature was controlled by sleep stage, it improved by 3.3% to an average of 11.4%.

These results are significant as they verify the effectiveness of the “AI Sleep Mode” applied to KD Navien’s Mat products. In 2024, KD Navien introduced AI Sleep Mode to the Navien Mat, which senses the user’s breathing sounds during sleep, analyzes the user’s sleep stage, and automatically controls the mat temperature accordingly to induce deep sleep. This function was also applied to the five Navien Mat Four Seasons models released this year (EMF501, EMF500, EMF450, EMW751, EMW750), as well as three Navien Mat models (EMW721, EMW720, EMW700) and two Carboncore Navien Mat models (EME651P, EME650D). Navien Mat creates an optimal sleeping environment using various technologies, such as precision temperature control in 0.5℃ increments, dual temperature sensing, and separate heating for the left and right sides.

“We find it very meaningful that the sleep quality improvement effect of the Navien Mat has been published in an internationally prestigious academic journal. Moving forward, we will strive to provide our customers with an optimal sleep environment through continuous R&D,” said Kim Yong-bum, Chief Sales and Marketing Executive at KD Navien.