Blog

Tips, insights, and news about saunas, wellness, and outdoor living.

All Sauna Science & Research Health & Longevity Announcements Business / Partnerships

AnnouncementsJan 16, 2026

HSA/FSA for Sauna Rental

If you’ve got an HSA or FSA, you may be able to get reimbursed for Simply Sauna rentals using pre-tax funds. It’s not a “swipe your HSA card at checkout” thing — you qualify first through a quick Flex consultation, get a Letter of Medical Necessity if approved, then book your sauna like normal and submit your letter + receipt for reimbursement. The whole eligibility check takes about 2 minutes to start, and your letter (if you qualify) can be valid for a full year.

Business / PartnershipsJan 16, 2026

Why a Sauna Is One of the Highest-ROI Amenities for Your Short-Term Rental

A sauna can turn an STR from “nice place” into “the place with the private sauna.” It boosts revenue by supporting higher nightly rates, improving off-season demand, and increasing listing conversion. This article breaks down the ROI on a $9,000 sauna and explains two ways to add one: host through Simply Sauna’s STR Sauna Amenity program or buy/install permanently.

Sauna Science & ResearchJan 11, 2026

Traditional Sauna vs Everything Else: Why the Finnish Study Matters

Most “sauna longevity” claims trace back to a Finnish study of traditional sauna use. This piece breaks down what the study actually found, why traditional sauna is not interchangeable with infrared or steam, and what later research adds to the case - without overstating what the evidence can prove.

Sauna Science & ResearchDec 30, 2025

Sauna, Ice Packs, And Sperm

Can frequent hot sauna hurt male fertility—and does icing “the boys” during sessions actually help? We walk through Bryan Johnson’s experience, the existing research on heat and sperm, and what a sensible sauna strategy looks like if you’re trying to conceive.

Sauna Science & ResearchDec 23, 2025

Bryan Johnson, Finnish Studies, and Why Most Research Is Messy

This article looks at Bryan Johnson’s sauna experiment alongside Finnish sauna studies and John Ioannidis’ “Why Most Published Research Findings Are False,” to show how n=1 data and published research can both be useful—and both be misleading.

AnnouncementsDec 23, 2025

Pay Over Time for Mobile Sauna Rentals in NJ (Klarna + Affirm)

Simply Sauna now offers Pay Over Time at checkout with Klarna or Affirm (subject to approval), giving customers a flexible way to book mobile sauna rentals in NJ or move forward with a sauna purchase without paying everything upfront.

Sauna Science & ResearchDec 17, 2025

Can Sauna Help With Microplastics and Chemical “Detox”?

Can sauna really help with microplastics and chemical “detox”? We walk through Bryan Johnson’s before-and-after tests, the small but interesting research on toxins in sweat, and why the honest answer is “promising, but far from magic.”

Sauna Science & ResearchDec 12, 2025

Exactly How Bryan Johnson Uses Sauna (Temperature, Time, Frequency, Style)

Curious what Bryan Johnson actually does in the sauna? This piece walks through his full routine step by step and then suggests how an ordinary person can borrow the structure without turning their life into a full-time experiment.

Sauna Science & ResearchDec 12, 2025

Deep Dive Into Bryan Johnson’s Sauna Protocol

Curious about Bryan Johnson’s sauna routine? This article walks through his exact protocol and lab results, then stacks them up against Finnish sauna studies to see where they converge, where they’re unclear, and what a normal person can realistically take from it.