Saunas
15 reviewsOur pick if a blanket is enoughHigherDOSE Infrared Sauna Blanket $699 ·
What the research saysAre saunas good for you?Moderate
LONGEVITY GEAR, CHECKED
What’s worth
buying?
Buying guides for saunas, red light, cold plunges, sleep, testing, wearables, supplements, water and air. Every pick comes with a clear reason, a dated US price and the trade-off to know.
- Dated US price checks
- The trade-off named for every pick
- No paid placements or invented scores
THE BUYING GUIDES
Choose a category.
Each guide names its picks, the reason for each and every product we reviewed.
Red-light therapy
14 reviewsOur pick if it's only your faceHigherDOSE Red Light Face Mask $349 ·
What the research saysDoes red light therapy work?Mixed
Cold plunges & contrast therapy
9 reviewsOur no-chiller starter pickIce Barrel 300 $1,149.99 ·
What the research saysDo cold plunges work?Mixed
Sleep & bedding
13 reviewsOur pick for a bed colder than the roomSleepme Chilipad 2.0 $1,699 ·
What the research saysDo cooling mattress pads, sleep masks and sheets help you sleep?Weak
Blood, biological-age & glucose testing
10 reviewsOur all-round blood-panel pickFunction Membership $365 for the first year ·
What the research saysAre longevity blood tests and biological-age clocks worth it?Not supported
Sleep & recovery wearables
13 reviewsOur no-membership ring pickUltrahuman Ring PRO $479 ·
What the research saysHow accurate are sleep trackers?Moderate
Third-party-tested supplements
11 reviewsOur magnesium pickMomentous Magnesium Bisglycinate $16.99 ·
What the research saysDo creatine, fish oil, vitamin D and magnesium work?Mixed
Water filtration
15 reviewsOur pick if you can't plumb anything inAquaTru Classic $475 ·
What the research saysDo water filters work?Strong
Air quality
10 reviewsOur pick for a medium roomBlueair Blue Pure 311i Max $229.99 ·
What the research saysDo air purifiers work?Strong
SIDE BY SIDE
Popular comparisons.
Head-to-head guides for the choices readers ask about most.
HAVE A SHORTLIST ALREADY?
Make the decision easier.
Compare products
Prices, dimensions and the important differences, side by side.
Find a product that fits
Narrow the options by budget, space and installation.
HOW WE CHOOSE
A reason behind
every pick.
We favor products that fit a clear need. Each guide explains what earns a place, when an alternative makes more sense, and which claims are still unproven.
Every review cites its sources and dates its prices. Brands can’t pay for a pick, and each review says whether its price link earns us a commission.