BrainSleep Co., Ltd. (Headquarters: Chiyoda-ku, Tokyo; Representative Director: Atsushi Hirota; hereinafter "BrainSleep") has supervised everything from bedding to spatial design to achieve quality sleep and comfortable awakening, based on BrainSleep's knowledge, for Tokyu Fudosan Co., Ltd. (Headquarters: Shibuya-ku, Tokyo; Representative Director: Hiroaki Hoshino; hereinafter "Tokyu Fudosan") and its newly built condominium "BRANZ Sugamo Sanchome (hereinafter, "this property")" which has the concept of an ideal sleeping environment. Quality sleep requires not only the bedroom but also the design of the entire building. The sleeping environment of this property promotes the "golden 90 minutes" of deep sleep, which BrainSleep advocates as a critical time that affects the quality of sleep, by focusing on "body temperature control," "regulating the body clock," and "a relaxing space" – three initiatives that improve sleep quality, thereby enhancing the quality of sleep. The property's website will be launched on June 13, 2025 (Friday). Background According to an OECD survey, Japan has the shortest average sleep time among 33 countries at 7 hours and 22 minutes*, and the average sleep time for workers is even shorter at 6 hours and 50 minutes*.Furthermore, a decline in sleep quality can lead to various risks, including mental risks such as reduced daily motivation, and health risks such as lifestyle-related diseases. As a result, interest in sleep has been steadily increasing in recent years. This has led to an increase in methods, services, and products that incorporate support for improving sleep quality into residential environments, including bedrooms, which are spaces for sleep.While bedrooms are typically associated with sleep spaces within a home, all living spaces, including the living room and hallways, directly impact sleep quality and are crucial for a healthy lifestyle, both physically and mentally. With the concept of pursuing ideal sleep throughout the entire building, Tokyu Fudosan planned this property for workers who find it difficult to secure sufficient sleep, and BrainSleep supervised all rooms for sleep environment design. The property incorporates BrainSleep's expertise and sleep solutions based on the methods from "The Stanford Sleep Book" by Seiji Nishino, its chief research advisor, to create a meticulously designed sleep-tech residence. *1 OECD (Gender Data Portal 2021)*2 Sleep Deviation Value Survey Result Report 2025 "Three Sleep Environments" to enhance the quality of "Golden 90 Minutes" sleep In the "sleep cycle" where non-REM sleep (deep sleep) and REM sleep (light sleep) repeat, it is known that the quality of sleep improves if one can sleep deeply for about 90 minutes immediately after falling asleep, when non-REM sleep is deepest. Since this is a crucial time that determines the quality of sleep until awakening, the 90 minutes immediately after falling asleep is called the "Golden 90 Minutes."*3The sleeping environment of this property is supervised to improve sleep quality by promoting deep sleep during the "Golden 90 Minutes" through three initiatives. *3 Seiji Nishino, "Stanford Sleep: The Best Sleep" (2017) 1.Body Temperature Control Human body temperature is broadly divided into two types: ① "skin temperature," which is the temperature of the body's surface, and ② "core body temperature," which is the internal body temperature. These two types of body temperature fluctuate in a 24-hour cycle. At night, skin temperature rises and core body temperature drops, and the smaller the difference between skin temperature and core body temperature, the more sleepiness is induced.To promote such body temperature changes, it is effective to temporarily raise the core body temperature through activities like bathing. Once the core body temperature rises, there is a natural reaction to lower it, which results in a significant drop in core body temperature some time after bathing. In this process, the temperature difference with the skin temperature further decreases, creating a state that easily induces natural sleepiness.In this property, an automatic bathtub cleaning function is installed, allowing for bathtub cleaning and hot water supply from a smartphone. By creating an environment where bathing is easy, it supports body temperature control. 2.Regulating the Body Clock Humans have a circadian rhythm of approximately 24 hours, and this internal clock allows the sleep-wake rhythm, body temperature, and hormone secretion to follow cyclical patterns. However, the average body clock is 24.2 hours, and if left unregulated, it gradually shifts backward. Therefore, it is important to regulate the internal clock rhythm with "light."This property has introduced a system that allows for controlling and timing the color temperature and illuminance of "light," which significantly impacts the circadian rhythm, via a smartphone. At night, low illuminance and warm-colored light promote smooth sleep, while bright light in the morning induces awakening and helps adjust the body clock. 3.Relaxing Space It is known that when in contact with wooden materials, the difference between the maximum and minimum heart rate decreases, and physiological stress from blood pressure elevation does not occur. Additionally, viewing wooden materials has been shown to reduce activity in the prefrontal cortex, suppress negative emotions, and increase feelings of relaxation, thereby reducing negative moods.In this property, some walls and ceilings in the master bedroom are fitted with natural wood interior materials, bringing the relaxing effect of wood and enabling quality deep sleep. In the common areas, in addition to diverse exterior landscaping, a courtyard with natural light is installed within the entrance hall, allowing residents to feel greenery indoors. Furthermore, solid wood is used for some wall surfaces in the entrance hall, creating a relaxing space surrounded by greenery and wood. [Property Overview]Property Name: BRANZ Sugamo SanchomeLocation: 3-1130-2 Sugamo, Toshima-ku, TokyoTotal Units: 29 units (including 3 units for project collaborators)Structure Scale: Reinforced concrete, 11 stories above groundOfficial HP: https://sumai.tokyu-land.co.jp/branz/sugamo3/ [Property Business Operator Overview] Company Name: Tokyu Land CorporationEstablished: December 1953Location: Shibuya Solasta, 1-21-1 Dogenzaka, Shibuya-ku, TokyoPresident and Representative Director: Hiroaki HoshinoCompany Website: https://www.tokyu-land.co.jpBusiness Description: As a core company of Tokyu Fudosan Holdings Corporation, we are a comprehensive real estate company that develops various businesses such as urban development, housing, and renewable energy. Based on the development capabilities we have cultivated as a developer, we create and propose environmentally friendly town development, new lifestyles, new ways of working, and new ways of spending time.
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