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Biohacking · Answer

How long should you stay in a sauna?

Most studies of sauna benefits used 5–20 minute sessions. Here's how long to stay, how often to go, and the safety rules that matter.
By Reviewed Updated 1 min read

Quick answer

How long should you stay in a sauna?

Most people do well with 10–20 minutes per sauna session. In the Finnish cohort studies linked to cardiovascular benefits, sessions typically lasted about 11–19 minutes at around 80°C (176°F). Beginners should start with 5–10 minutes. Leave immediately if you feel dizzy or unwell, hydrate, and avoid alcohol before and during sauna use.

At a glance

Key takeaways

  • Most studies used sessions of roughly 5–20 minutes.
  • Finnish cohort data associated 4–7 sessions a week with lower cardiovascular mortality.
  • Start with 5–10 minutes and build gradually.
  • Avoid alcohol, stay hydrated and exit if you feel unwell.

Sauna bathing is one of the best-studied heat practices. Here's how to use it safely and effectively.

How long to stay

In the Kuopio Ischemic Heart Disease study of more than 2,300 Finnish men, the typical sauna session was at about 80°C (176°F) and lasted on average about 14 minutes. Men who stayed longer than 19 minutes had lower rates of fatal cardiovascular events than those staying under 11 minutes.

A practical approach:

  • Beginners: 5–10 minutes.
  • Regular users: 10–20 minutes.
  • Multiple rounds: some people do 2–3 shorter rounds with cooling breaks in between.

Listen to your body. Leave immediately if you feel dizzy, nauseated or light-headed.

How often to go

The same Finnish cohort found that compared with once a week, 2–3 sessions a week was associated with lower cardiovascular and all-cause mortality, and 4–7 sessions with even lower rates. A 2018 review summarized benefits linked to regular sauna use, including lower blood pressure and improved vascular function. These studies are observational, so they show association rather than proof.

Read more in is sauna good for your heart.

Safety rules

  • Hydrate before and after.
  • Skip alcohol before and during — it's linked to sauna-related accidents.
  • Cool down gradually afterward.
  • Check with a clinician if you're pregnant, have heart disease, low blood pressure, or take medications that affect blood pressure.

Sauna and cold

Many people pair sauna with a cold plunge. Compare the two in cold plunge vs sauna, and explore more heat and cold practices in our biohacking hub.

People also ask

More questions people ask

How often should you use a sauna?

Finnish data linked 2–3 sessions a week with benefits and 4–7 with larger associations. Any regular use is a reasonable goal.

Is it safe to sauna every day?

For healthy adults who stay hydrated, daily use is common in Finland. People with heart conditions should check with a clinician first.

Should you cold plunge after a sauna?

Many people alternate hot and cold for the contrast. It's a preference; the evidence for added benefit is limited.

Answers

More answers

Citations

Sources & references

  1. [1]Association between sauna bathing and fatal cardiovascular and all-cause mortality eventsLaukkanen T, Khan H, Zaccardi F, Laukkanen JA. JAMA Internal Medicine, 2015 · Cohort studyView source : Association between sauna bathing and fatal cardiovascular and all-cause mortality events (opens in a new tab)
  2. [2]Cardiovascular and Other Health Benefits of Sauna Bathing: A Review of the EvidenceLaukkanen JA, Laukkanen T, Kunutsor SK. Mayo Clinic Proceedings, 2018 · ReviewView source : Cardiovascular and Other Health Benefits of Sauna Bathing: A Review of the Evidence (opens in a new tab)

Study links open a PubMed search for the exact title, so they keep working even if a journal changes its URL.

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