
Three Japanese companies are working together to help show the importance of a good night’s sleep.
Sleep is important for a lot of reasons; it’s great for health, for beauty, and for mood and motivation. So if you’re not getting enough, three Japanese companies, teamed up as the Hot Spring x Sleep Consortium, want to help you to relearn its importance with a special sleep analysis program at a hot spring resort.
The Hot Spring x Sleep Consortium is made up of JTB Tourism Research and Consulting Co., which conducts research on public health habits, S’UIMIN, a startup company from the University of Tsukuba which produces easy-to-use sleep measurement tools based on brain wave activity, and Ryokan Ohnuma, a Japanese-style inn in the hot spring town of Naruko in Osaki, Miyagi Prefecture. They want to impress upon participants the importance of sleep by helping them measure the quality of their rest, and through a stay at an hot spring resort hopefully show what a good nights’ sleep feels like, so that they can consider why it’s important to improve sleep habits at home.
▼ If you find yourself falling asleep at meetings, you may want to sign up!
They’re currently recruiting participants for the program, who will receive S’UMIN’s original InSomnograf device mailed to their homes. The device will record brain wave activity as they sleep and send it to a medical professional, who will use it to produce a report on their sleep quality.
After that, participants will spend two nights at a hot spring resort, where Ryokan Ohnuma will do their best to give them a good night’s sleep. Naruko Onsen, the neighborhood where the inn is located, is designated by the Japanese government as a National Hot Spring Health Resort, and is a popular destination for working people looking to alleviate stress and exhaustion. The resort includes four private baths as well as three shared baths, which are all made up of natural hot spring water.
Participants will have the option to choose between multiple meal plans at the resort, comprised of a variety of healthy dishes as well as soup and rice. In this atmosphere of tranquility, relaxation, and health-based approaches, participants can expect two good nights’ sleep, which will, of course, be measured by the InSomnograf and compared to their everyday sleeping patterns.
Though participants will be required to pay for their stay, meals and transportation, the use of the InSomnograf is free for the duration of their stay and for the period of measurement beforehand. The consortium is looking for 20 people between the ages of 20 and 40 who live in Tokyo, Kanagawa, Chiba, or Saitama, and whose work is mostly conducted at a desk. If you’re interested, you can apply for the study here, but if you do, make sure you also book your stay at Ryokan Ohnuma for whatever days you desire here–or call to specify you’ll be participating in the study. You can book your stay for any time between now and November 30, but acceptance in the study is on a first-come, first-serve basis and applications are expected to close at the end of October.
Naruko is a charming hot spring town famous for its kokeshi dolls, so it’s definitely worth visiting either way. If you’re looking for a nice weekend vacation this fall, why not book a stay at Ryokan Ohnuma and get a free sleep analysis while you’re at it?
Source: PR Times
Top image: Pakutaso
Insert images: PR Times, Pakutaso
● Want to hear about SoraNews24’s latest articles as soon as they’re published? Follow us on Facebook and Twitter!




Low-cost Japanese inn welcomes foreign guests with hot springs, sake tastings, cosplay backdrops
Doll otaku’s plastic bedmate gets loving hospitality from beautiful Japanese hot spring inn
Freezing temperatures in Japan turn inn’s hot spring water to ice
The pros and cons of working from a Japanese hot spring inn
The top 10 hot springs Japanese travelers want to visit this fall
A real-world Pokémon Poké Ball hotel is opening in Japan at a still-secret location [Video]
Tamagotchi evolves into a ring for its 30th anniversary, preorders now open
Family Mart releases Famima convenience store products nationwide, but which ones are worth buying?
Japan’s most popular curry rice restaurant chain, Coco Ichibanya, might be for sale
Finally! Japan’s big three convenience store chains announce rice ball price reductions
One Piece Day 2026 brings new art, music, and new cast announcements
Japan Railways announces unlimited-ride train pass for fall travel
Studio Ghibli unveils new anime calendars and diary planners for 2027
Onsen Egg Bukkake Udon Ice Cream makes us rethink everything we thought we knew about sweets
Hobonichi unveils new 2027 planners, diaries and stationery with One Piece, Suica Penguin, Hello Kitty and a must-buy Mini Techo
Japan’s final Penguin Suica train cards have already shipped, and when they’re gone, they’re gone
Solo travel in Japan: Hidden beer garden in Tokyo is a haven for single visitors
Japan approves foreign resident visa renewal fee increases of up to 967 percent, starts soon
Farewell Final Ceremony announced for Tokyo’s life-size Gundam statue, will stream live
Family Mart releases new Human Made Cup Noodle in Japan, with freebies for Nigo fans
Hikaru Utada sings new song in Shinkansen commercial for Japan’s Supreme Class cabins
Mister Donut releases new doughnuts that look and taste like Japanese sweet potatoes
12-year-old British girl who went missing in Tokyo found safe after visiting anime sites around Yokohama
7-year-old boy left behind on Mt. Fuji by his own dad
Sushi Bus: Japan’s first conveyor-belt bus lets you eat sushi while sightseeing around Tokyo
Pokémon Center Online designates first Pokémon items that will require Japanese ID card to buy
Japanese toilet aims to attract foreign tourists but not everybody is happy about it
New Japanese vending machine at Shinkansen station sells cups of ice on platform
Study finds hundreds of people in Indonesia legally named after Naruto, Inuyasha, other anime stars
Japan announces sudden 400-percent increase in visa fees for foreigners entering the country
Japan’s human washing machines will go on sale to general public, demos to be held in Tokyo
Studio Ghibli has a new anime out, and there’s only one place in the world where you can see it
Starbucks Japan releases new drinkware and goods for Valentine’s Day
Starbucks Japan releases new sakura goods and drinkware for cherry blossom season 2026
Japan’s newest Shinkansen has no seats…or passengers [Video]
Tokyo subway installing new ticket gates that don’t accept payment through Suica or other IC cards
Japanese ninja certification exam attracts 131 candidates from Japan and abroad
Salomon releases Japan-exclusive Mt. Fuji hiking gear that doubles as an amazing souvenir
Put sesame oil in your coffee? Japanese maker says it’s the best way to start your day【Taste test】
Japanese pot sticker restaurant chain also runs flat-rate hot spring inn, but is it worth staying at?
Beautiful new Tokyo hotel gives you the best of both worlds with hot spring bath in the big city
Pokémon and hot spring bathhouse collaborate to bring Pokémon to your bath and sauna sessions
The old-school awesomeness of the New Akao, a Showa-era hot spring hotel still standing tall
Japanese hot spring inn lets you spend night for under US$1 if you do something special in return
Japan’s top five retro hot springs for a time trip back to the onsen past, as chosen by travelers
Nara hotel with hot spring baths by imperial palace site is a reason to remember the prefecture
Hidden onsen hot spring near Tokyo is waiting to be discovered by foreign tourists
Relax at Haneda Airport’s sky-high hot spring and enjoy a Hololive collaboration
Shizuoka hot springs town invites you to see one of the longest hina doll displays in Japan
Tokyo’s Edo-themed hot spring hotel is a fresh seafood paradise