TON — Rules

Sauna Rules

Last updated: 2026-07-17

These rules govern use of the sauna at TON (the "Facility"), an accommodation facility operated by BUPPHA Inc. This page is an English-language reference; the Japanese version (サウナ利用規則) prevails in case of any discrepancy.

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Preamble

The Facility has a large electric-stove sauna that up to about 10 people can use at the same time. These rules are stipulated to ensure the safe and hygienic use of the sauna, and all users of the Facility are required to comply with them.

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Article 1 (Scope of Application)

1. These rules apply to use of the sauna room, the cold plunge and cold shower, and related equipment installed at the Facility (collectively, the "sauna facilities").
2. Compliance with these rules forms part of the conditions of stay at the Facility. In the event of a violation, you may be asked to discontinue use.

Article 2 (Conditions of Use)

1. The sauna facilities are available 24 hours a day. However, from late night to early morning (10:00 p.m. to 7:00 a.m.), please keep noise to a minimum — including when entering and leaving and while cooling off — out of consideration for the neighbors.
2. The maximum number of people in the sauna room at one time is about 10. When it is busy, please take turns.
3. The sauna facilities may not be used by anyone who:
   1. Has been drinking alcohol (even a small amount)
   2. Has a history of heart disease, high or low blood pressure, respiratory illness, epilepsy or other seizure conditions, without a doctor's approval
   3. Is pregnant
   4. Has a fever, symptoms of an infectious disease, or is otherwise clearly unwell
   5. Is a child under 6 years of age
4. Children of elementary school age and younger must be accompanied by an adult user at all times. Use by children alone is prohibited.
5. Hydrate thoroughly before use.

Article 3 (Attire and Hygiene)

1. Swimwear must be worn in the sauna room. Sitting on the benches with bare skin is prohibited.
2. Shower and wash before entering.
3. Always place a towel on the bench before sitting.
4. Remove metal accessories (rings, necklaces, earrings, etc.) beforehand to prevent burns.
5. Contact lenses may dry out or deform in the heat; remove them where possible.

Article 4 (How to Use)

1. The target temperature setting is 80–90°C (maximum around 90°C).
2. As a guide, each session should last 6 to 12 minutes. Stay within what feels comfortable for your condition.
3. If you feel dizziness, nausea, palpitations, a headache or anything unusual, leave the sauna room immediately, rest somewhere cool and hydrate.
4. Hydrate frequently — before entering, during breaks and after leaving.
5. Before using the cold plunge, rinse off your sweat in the shower, and enter gradually, starting with the parts of your body furthest from your heart (your feet).

Article 5 (Stove and Löyly)

The Facility's sauna uses an electric stove.

1. Operate only the controls designated by the Facility (power switch and thermostat).
2. For löyly (pouring water over the sauna stones), use the dedicated ladle and only the water designated by the Facility (aroma water where provided). Fragrances, alcoholic drinks and any other liquids are prohibited.
3. Do not pour large amounts of water at once — the sudden burst of steam can cause burns.
4. Do not place any objects or drape any cloth on the stove or the sauna stones.
5. If you notice anything wrong with the equipment, stop using it immediately and contact the Facility operator.

Article 6 (After Use)

1. After use, rinse the benches and floor lightly with the shower.
2. Sort used towels into the collection point designated by the Facility.
3. When leaving, keep the sauna room door slightly open for ventilation.
4. Check that the lights, heater and other power switches are turned off.

Article 7 (Prohibited Acts)

Users shall not do any of the following when using the sauna facilities:

1. Use after drinking alcohol or while under the influence of medication
2. Use while in any of the conditions listed in Article 2, paragraph 3
3. Exceeding the maximum number of people set out in Article 2, paragraph 2
4. Use by children alone
5. Pouring anything other than water (alcoholic drinks, fragrances, fuels, etc.) over the sauna stones
6. Placing objects on the stove or the sauna stones
7. Bringing in smartphones, tablets or other electronic devices
8. Bringing in food or drink other than drinking water
9. Shouting, making noise, vigorous exercise or any other conduct that disturbs other users
10. Smoking in the sauna room
11. Soiling or damaging the equipment, whether deliberately or carelessly

Article 8 (Emergencies)

1. If a user shows serious symptoms such as loss of consciousness or cardiac arrest, take the following steps immediately:
   1. Move the user out of the sauna room to a cool place.
   2. Give water only if the user is conscious.
   3. Call an ambulance (dial 119).
   4. Contact the Facility operator (email: contact@ton-nagano.com).
2. For burns, cool the affected area under running water for at least 15 minutes and seek medical attention as needed.
3. In the event of fire or unusual smoke, close the sauna room door to prevent spread, evacuate to a safe place outdoors and call the fire department (dial 119). Fire extinguishers are located in the sauna anteroom, the second-floor hallway and the kitchen.

Article 9 (Disclaimer)

1. Use of the sauna facilities is at the user's own risk.
2. Users are responsible for checking their own physical condition before use.
3. The Facility accepts no liability for accidents, injuries, burns or health damage arising from violation of these rules, concealment of poor physical condition or carelessness, except in cases of intent or gross negligence by the Company.
4. Where a violation of these rules causes damage to the facilities, equipment or furnishings, the user shall bear the costs of restoration and compensation for the damage.
5. If you notice anything wrong with the sauna facilities, stop using them and contact the Facility operator promptly.

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