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Sauna Hype°H

How we rate

The Hype Dial measures how far a claim has drifted from its evidence.

Every claim on Sauna Hype gets a reading between 0 and 100 degrees of hype (°H for short). We add four scores to get it. Each score runs from 0 to 25 and answers one question about the claim and the research behind it.

A claim near zero says what careful human studies found at a dose people use. The reading climbs as a claim stretches past its evidence, and up near a hundred it describes an effect with no measurements behind it. Most of what you hear falls in between, and the four parts show you where the drift comes in.

Four questions set every reading

Part 1 · 0 to 25

Evidence

What kind of human evidence exists?

  1. 0Randomized human trials or pooled analyses of them measured the outcome itself.
  2. 6Large studies followed people for years and counted hard outcomes like deaths or diagnoses.
  3. 12The human trials are small or short, or they only tracked a marker in the blood.
  4. 18Most of the support comes from animal, cell or mechanism studies, and human data is scarce.
  5. 25There's no evidence at all, or trials looked and found nothing.

Part 2 · 0 to 25

Consistency

Have other studies found the same thing?

  1. 0Independent teams found it again in different groups of people.
  2. 8The results agree, though most come from one team or one population.
  3. 16One study carries it, or the studies disagree.
  4. 25Better studies have contradicted it.

Part 3 · 0 to 25

Magnitude

Does the claim match the size of the effect?

  1. 0The claim states the effect the studies measured.
  2. 8It quotes a percentage change without saying how common the outcome is, or it rounds up.
  3. 16It inflates the effect or drops the context that shrinks it.
  4. 25It describes an effect that no study has measured.

Part 4 · 0 to 25

Dose

Does the studied dose match how people use it?

  1. 0Researchers studied it the way people do it at home.
  2. 8The study came close, and differences like frequency or temperature still matter.
  3. 16The study used a dose far from home use, like an hour in 14°C water or two hour-long saunas a day.
  4. 25No relevant dose has ever been studied.

Five zones turn the number into a word

  1. Solid0–19°HGood human studies back it, and the claim says what they found.
  2. Likely20–39°HThe evidence points this way, and a careful reader should know where it runs thin.
  3. Unsettled40–59°HA little human data and a plausible mechanism support it. Better trials have to come before anyone relies on it.
  4. Stretched60–79°HThe claim pulls a real finding well past what the study showed.
  5. Hot air80–100°HNothing solid supports it, or the best evidence runs against it.

Score a claim yourself

Load one of our readings and move the sliders to see which part carries the hype. Or start from zero and rate something you heard this week.

“The first minute in cold water is the most dangerous part.”

6/25

Large studies followed people for years and counted hard outcomes like deaths or diagnoses.

6/25

Independent teams found it again in different groups of people.

2/25

The claim states the effect the studies measured.

4/25

Researchers studied it the way people do it at home.

02040608010018°HSOLID

Solid

Good human studies back it, and the claim says what they found.

We hold ourselves to these rules

  • We read the full paper whenever we can get it, because abstracts rarely spell out a study's limits. When we could only read the abstract, the study page says so.
  • Every figure on the site links to the paper it came from.
  • We rate the claim as people say it, so an excellent study can still end up behind a claim that reads 70°H.
  • When new research comes out, we update the reading. The date at the top of each claim page shows when we last checked.
  • Sauna Hype carries no affiliate links. Our sister magazine Sauna Monthly earns commissions on some products it reviews, and we mark every link that goes there.
  • Send corrections to mail@adambognar.com. We fix errors and note the change on the page.

The dial has limits of its own

Each reading is an editorial judgment made against a published rubric, and two careful readers could come out a few degrees apart. Trust the zone more than the exact number. Nothing here is medical advice. If you're pregnant or have a heart condition, talk to your doctor before you start regular heat or cold exposure.

Browse every claim or read who makes Sauna Hype.