8 posts
Half-body and full-body bathing differ in immersion depth, water pressure, and how quickly they feel warm. Compare practical timing, comfort, and heart-rate caveats.
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When should you bathe before bed, and how warm should the water be? A practical guide to timing, temperature, core body temperature, and individual variation.
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An estimated 19,000 people a year die suddenly while bathing in Japan, most of them in winter, most of them over 65. What heat shock actually is, the official rules for avoiding it, and what the blood pressure swing looks like on a watch.
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One is defined by a law about the water, the other by a law about the building. Price, water, atmosphere, and what each is good for, plus the third thing, the super sento, that most people actually mean.
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Wash before you get in, keep the towel out of the water, tie your hair up, know the tattoo situation before you arrive. Every rule of the Japanese hot spring in order, with the reason behind each, and a note on the watch.
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Japanese onsen are classified by what is dissolved in the water. Here is each official type, its typical temperature and feel, a famous example, and what it means for your skin, your watch, and your session log.
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Apple Watch is rated for swimming, but a 42°C sulfur spring is not a pool. What the water resistance rating covers, which spring types are hard on the watch, and how to bathe with one sensibly.
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Not every Apple Watch can measure the water it is in. Here is which models have the sensor, how it works, and why it matters for logging onsen and sauna sessions.
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Furolog