About us

Inspired by our co-founder's childhood experiences with the warmth of Asian communal spaces, NAOSU, meaning “to heal” in Japanese, embodies our mission to create a sanctuary of connection, restoration, and balance. Drawing inspiration from Japanese onsen, sento, and diverse Asian wellness traditions, we craft an authentic, welcoming, and modern space.

Rooted in harmony and belonging, NAOSU offers a refuge to disconnect, turn inward, and rediscover the joy of presence. Our communal sauna bridges the gap between home and work, fostering moments of recharge and connection.

We honor the essence of Asian culture while embracing the uniqueness of our local community. Free from ego and performance, our sauna is a place for authenticity and welcome—a true home for the body and soul.

Wood-paneled room with a glass door, indoor sauna with wooden benches, and a large green potted plant near a window.
A woman with tattoos and a woman with a cap sitting together in a wooden hot tub outdoors, smiling at each other.

The Timeless Art of Heat Therapy in Asia

Japan’s connection with heat therapy has a rich history deeply intertwined with its cultural traditions. Long before the introduction of modern saunas, the Japanese embraced the healing power of heat through on’yoku (sweat baths) and mushiburo (steam rooms), which were popular during the Edo Period. These early practices were rooted in the belief that sweating purified the body and promoted well-being. Over time, Japan’s famed public bathhouses (sento) and natural hot springs (onsen) further cemented the nation’s affinity for water and heat therapy.

In the mid-20th century, the Finnish sauna was introduced to Japan, blending seamlessly with the country’s existing wellness traditions. This fusion of Finnish and Japanese practices led to the creation of unique sauna experiences that emphasize not just physical relaxation, but also mindfulness and harmony with nature. Today, Japan’s sauna culture thrives in super sento, luxury resorts, and traditional ryokan inns, where the ritual of heat therapy continues to evolve.

For many in Japan, sauna therapy is more than a health trend—it’s a way of life, blending ancient wisdom with modern science to promote wellness. Whether you’re stepping into a traditional steam room or a state-of-the-art sauna facility, you’re participating in a time-honored ritual that nourishes both body and mind.

Below are some of the health benefits of sauna use, cold water immersion, and contrast therapy found in the current literature, with links to peer reviewed articles.

    • Cardiovascular Benefits
      Sauna bathing can improve cardiovascular health by enhancing blood flow, reducing blood pressure, and mimicking moderate exercise. This adaptation promotes vascular flexibility and may lower cardiovascular risk (Laukkanen et al., 2015).

    • Pain and Chronic Conditions
      Sauna use has shown effectiveness in alleviating pain and improving symptoms in conditions like fibromyalgia. Long-term sauna therapy is associated with reductions in muscle stiffness and pain severity (Hannuksela & Ellahham, 2001).

    • Mental Well-being and Stress Reduction
      Regular sauna use helps reduce cortisol levels, leading to relaxation, improved mood, and enhanced sleep quality (Hussain & Cohen, 2018)

    • “Totonou” State
      In Japan, Sauna use is associated with a state known as “Totonou” which is a state of physical and mental relaxation and harmony that increases clarity and happiness. This state has been studied through sauna use and has shown to decrease heart rate and shorten reaction time (Chang, Ibaraki, Naruse, & Imamura, 2023)

    • Reduced Muscle Damage and Inflammation
      CWI reduces exercise-induced muscle damage markers like creatine kinase and lactate concentrations. This aids in faster recovery by limiting inflammation (Tipton et al., 2017).

    • Improved Insulin Sensitivity
      Regular CWI has been shown to improve glucose metabolism and reduce insulin resistance, offering potential benefits for metabolic health (Hussain et al., 2022).

    • Decreased Muscle Soreness
      Athletes benefit from CWI due to its ability to alleviate delayed onset muscle soreness (DOMS), helping maintain performance levels in subsequent activities (Broatch et al., 2014).

    • Activation of Brown Adipose Tissue
      Cold exposure has long been studied for it’s benefits in regulating metabolism and activating brown adipose tissue. Some research suggests it as a treatment for obesity (Huo et al., 2022)

    • Improved Circulation
      Research indicates that contrast baths can increase tissue oxygenation and hemodynamics, which may support muscle injury treatment (Shadgan et al, 2018)

    • Pain Relief
      Contrast therapy may alleviate pain associated with various conditions. For instance, a study reported that contrast baths are as effective as steroid injections in reducing pain from plantar fasciitis (Narula et al, 2014)

    • Decreased Lactic Acid Buildup
      Contrast hydrotherapy can lessen lactic acid accumulation following intense exercise, aiding in muscle recovery (Hotfiel et al, 2018)

    • Improved Joint Mobility
      Contrast therapy can enhance joint flexibility and function. Research suggests that contrast baths may improve the range of motion and functional mobility of joints like the knee, elbow, or hands (Vaile et al, 2008)