[Huge Buzz] Self-Care Book Focusing on Blood Flow and the Spine, 'Condition is 90% Blood Flow,' Hits #1 in Weekly Rankings at Major Bookstores (Overall or Practical Books Category)

KADOKAWA Corporation (Headquarters: Chiyoda-ku, Tokyo; Director, Representative Executive Officer, President and CEO: Tsuyoshi Natsuno) released the book 'Condition is 90% Blood Flow: Improve Fatigue, Coldness, and Aging with 'Magical Spine Loosening'!' by Yumiko Kataoka, director of the skeletal correction salon 'Sanitas Tokyo Nakameguro' (supervised by Hitoshi Umeoka), on Saturday, February 28, 2026. The book has generated a huge response since its release, immediately hitting #1 in sales rankings in the overall or practical books category at Kinokuniya Shinjuku Main Store, Yurindo Atre Ebisu, and Sanseido Yurakucho.

Released just after 'Blood Flow UP for More Smiles Day' on February 26, the book achieved the #1 spot in the overall or practical books category at the following major Tokyo bookstores:

- **Kinokuniya Shinjuku Main Store:** #1 in Weekly Paperback Overall Ranking (March 2 - March 8, 2026) - **Yurindo Atre Ebisu:** #1 Overall (March 1 - March 7, 2026) - **Sanseido Yurakucho:** #1 in Practical Books (March 2 - March 8, 2026)

The book's 'simple and immediately effective methods,' from Ms. Kataoka, who is also extremely popular on YouTube, have resonated with the specific problems of modern people, such as poor blood flow from prolonged temperature differences and the 'sedentary' lifestyle established by teleworking, gaining the support of many readers.

The book advocates the 'Bellycle Method,' a unique health method derived by Yumiko Kataoka, who has over 20 years of experience and has treated more than 40,000 patients. The root cause of ailments that modern people face, such as 'persistent fatigue,' 'stubborn coldness,' and 'age-related decline,' lies in the stagnation of blood flow, which is responsible for carrying oxygen and nutrients throughout the body and collecting waste products. The author focuses on the 'spine,' the pathway for the autonomic nerves that control this blood flow. She has established an approach that dramatically improves blood flow throughout the body by appropriately loosening the muscles around the spine.

The method introduced consists of a 3-step 'spine loosening' process: 'loosen, circulate, and align.' It features 25 types of simple stretches and massages that do not require special tools or large spaces and are easy enough not to cause sweating, all explained carefully with easy-to-understand illustrations.

Beyond just relieving pain and stiffness, the book also includes methods to create a more youthful appearance by correcting posture, as well as advice on lifestyle habits such as diet and sleep. It is a bible for modern people to fundamentally condition their mind and body with 'effortless self-care.'