はるの空

日本、〒071-0200 北海道上川郡美瑛町字三笠番外地）はるの空

HONMONO Score

/ 100

ATrusted

Heat Quality6 / 17

Cold Bath13 / 17

Outdoor Air7 / 17

Cleanliness14 / 17

Aroma & Löyly6 / 17

Sauna Focus7 / 17

Photos

About this facility

Haru no Sora is a single-building inn perched on a hill in Biei, Hokkaido. It is known for the warm hospitality of owner Haruki Kasuga, and guests can relax in wood-filled rooms full of natural warmth. The highlight is an open-air bath (rotenburo) with views of a sky full of stars and Mt. Tokachi (Tokachidake), letting you enjoy autumn foliage by day and Biei's nature at night. You can also try insect collecting using a light trap, and with luck an Ezo squirrel may pay a visit. Thanks to the building's high heat retention, it stays comfortable throughout all four seasons.

Is this place the real deal?

How to get there

Open in Google Maps

Facility information

Phone: 090-1766-1062
Website: http://haru-aozora-com.sakura.ne.jp/
Instagram: #はるの空 posts
Google rating: ⭐ 4.9

Health effects of sauna (research evidence)

These are peer-reviewed studies on sauna bathing in general. They are not measurements of this facility, and they are not medical advice.

❤️Cardiovascular

Sauna habits and reduced risk of heart disease, stroke, and sudden death

Association Between Sauna Bathing and Fatal Cardiovascular and All-Cause Mortality Events
Laukkanen T, Khan H, Zaccardi F, Laukkanen JA · JAMA Internal Medicine · 2015
フィンランド人男性2,315人を20年間追跡。週4-7回サウナを利用する群は週1回群と比較して心血管死亡リスクが50%低下、全死因死亡リスクも40%低下。
PubMed: 25705824 DOI: 10.1001/jamainternmed.2014.8187
Sauna bathing is associated with reduced cardiovascular mortality and improves risk prediction in men and women
Laukkanen JA, Laukkanen T, Kunutsor SK · BMC Medicine · 2018
男女1,688人の15年追跡コホート。サウナの頻度・時間と心血管死亡率の逆相関を確認。
PubMed: 30486813 DOI: 10.1186/s12916-018-1198-0

🧠Mental health

Effects on dementia, depressive symptoms, and stress resilience

Sauna bathing is inversely associated with dementia and Alzheimer's disease in middle-aged Finnish men
Laukkanen T, Kunutsor S, Kauhanen J, Laukkanen JA · Age and Ageing · 2017
週4-7回のサウナ習慣で認知症リスクが66%、アルツハイマー病リスクが65%低下。
PubMed: 27932366 DOI: 10.1093/ageing/afw212
Whole-Body Hyperthermia for the Treatment of Major Depressive Disorder: A Randomized Clinical Trial
Janssen CW, Lowry CA, Mehl MR, et al. · JAMA Psychiatry · 2016
うつ病患者を対象にした無作為化試験。1回のwhole-body hyperthermia(温熱療法)で6週間持続するうつ症状の有意な改善を確認。
PubMed: 27172277 DOI: 10.1001/jamapsychiatry.2016.1031

🛡️Immunity & inflammation

Immune activation and suppression of chronic inflammation

Cardiovascular and other health benefits of sauna bathing: A review of the evidence
Laukkanen JA, Laukkanen T, Kunutsor SK · Mayo Clinic Proceedings · 2018
サウナの抗炎症作用・血管内皮機能改善・酸化ストレス低減を包括的にレビュー。
PubMed: 30077204 DOI: 10.1016/j.mayocp.2018.04.008
Effects of sauna bathing on stress-related genes expression in athletes and non-athletes
Pilch W, Pokora I, Szyguła Z, et al. · Annals of Agricultural and Environmental Medicine · 2013
サウナによるヒートショックタンパク質(HSP72)の発現上昇を確認。免疫応答とストレス耐性の向上を示唆。
PubMed: 24364453

😴Sleep & recovery

Improved sleep quality and post-exercise recovery

Health benefits and risks of sauna bathing in patients with cardiovascular disease
Hannuksela ML, Ellahham S · American Journal of Medicine · 2001
サウナ後の副交感神経活性化と睡眠の質向上を報告。リラクゼーション効果のメカニズムを解説。
PubMed: 11479058 DOI: 10.1016/s0002-9343(01)00671-9
Post-exercise sauna bathing improves recovery from endurance exercise
Scoon GS, Hopkins WG, Mayhew S, Cotter JD · Journal of Science and Medicine in Sport · 2007
持久系アスリートを対象に、運動後サウナで血漿量増加と持久パフォーマンス向上(平均32%)を確認。
PubMed: 16877041 DOI: 10.1016/j.jsams.2006.06.009