Can You Wear a WHOOP Band in a Sauna? What the Data Shows

The WHOOP band has become one of the most popular fitness trackers for people who take recovery seriously. If you use a sauna as part of your routine, you have probably wondered - can you wear your WHOOP in a sauna? The short answer is yes, with some limits. Here is what you need to know about wearing your WHOOP band in the sauna.

Is the WHOOP Band Sauna Safe?

WHOOP rates its bands as water resistant with an IP68 rating, which means they can handle submersion in water up to 10 meters. The band itself is built to deal with sweat, rain, and short dips. But water resistance and heat resistance are not the same thing. Saunas reach 70 to 100 degrees Celsius (158 to 212 degrees Fahrenheit) in a traditional setup and 50 to 65 degrees Celsius in an infrared sauna. WHOOP does not publish an official maximum temperature rating, so you are working in a gray area.

That said, many WHOOP users regularly wear their band in the sauna without problems. The WHOOP 4.0 band is made of durable SuperKnit material with a polymer sensor housing that handles heat better than a lot of consumer electronics. The key is keeping your sessions reasonable.

Can Your WHOOP Go in a Sauna Without Damage?

The WHOOP band can go in a sauna for typical session lengths of 15 to 25 minutes without major issues. The biggest risk is to the battery. Lithium-ion batteries lose capacity faster when exposed to high heat over time, so daily sauna sessions with your WHOOP band on will shorten the battery lifespan compared to normal use. The sensor itself - which tracks heart rate, skin temperature, and blood oxygen - should continue working accurately in the heat.

One thing to watch for is skin irritation. When the band gets hot and presses against sweaty skin for extended periods, some users report redness or a rash underneath. If this happens, loosen the band slightly or remove it for part of your sauna session.

What the WHOOP Band Tracks During a Sauna Session

One of the reasons people want to wear their WHOOP band in the sauna is to capture data. Your WHOOP will pick up:

• Heart rate: Your heart rate goes up in a sauna, often reaching 120 to 150 bpm depending on the temperature and your fitness level. This is similar to moderate cardio.
• Skin temperature: The WHOOP 4.0 has a skin temperature sensor that will register the rise during your sauna session.
• Strain score: Because your heart rate goes up, your WHOOP will log strain from a sauna session. Some users report strain scores of 5 to 10 from a 20-minute session.
• Recovery data: If you sauna in the evening, the WHOOP band can help track how that affects your overnight recovery and HRV.

WHOOP Band in Sauna vs Steam Room

A traditional dry sauna is easier on the WHOOP band than a steam room. Steam rooms have near 100% humidity, which puts more stress on the seals and sensor contacts even though the temperature is lower (typically 40 to 50 degrees Celsius). The IP68 rating helps, but constant steam exposure is different from water submersion. If you split time between both, keep the WHOOP band on in the dry sauna and consider taking it off in the steam room.

Tips for Wearing Your WHOOP Band in the Sauna

• Keep sauna sessions to 20 minutes or less with the band on.
• Rinse the band with cool water after your session to clean off salt and minerals from sweat.
• Do not charge the WHOOP battery pack right after a sauna - let everything cool to room temperature first.
• If you notice the battery draining faster than usual, give the band a break from sauna sessions for a week.
• Wear the band on your wrist (not bicep) for the most accurate heart rate reading in the heat.

If you are curious about other electronics in the sauna, check out our guides on wearing AirPods in a sauna, using headphones in a sauna, and bringing your phone into a sauna. For tips on building a sauna and cold plunge routine, see our article on the benefits of sauna and cold plunge.

The Bottom Line

You can wear your WHOOP band in the sauna. The IP68 rating handles the moisture, and the build quality holds up to typical sauna temperatures for standard session lengths. Just be aware that regular heat exposure will gradually reduce battery life. If you want the health data from your sauna sessions - heart rate, strain, skin temp - the WHOOP band is one of the few trackers that can actually deliver that in sauna conditions.