Every guide and instrument.
Calculators to dose it, rankings to buy it, comparisons to decide between it.
Calculators
Cold Plunge Calculator
Time-by-temperature + the 11-minute weekly protocol
Sauna Heat-Dose Calculator
Score your week against the Finnish cohort numbers
Red Light Dose Calculator
mW/cm² × time → J/cm², by goal
Ice Bath Cost Calculator
Bagged ice vs. chiller breakeven
Sauna Cost Calculator
Electricity per session at your kWh rate
Contrast Therapy Calculator
Build hot/cold rounds, bank both doses
Gear guides
Best Cold Plunges 2026
$100 tubs to always-cold chillers
Best Cold Plunge Chillers 2026
Always-cold water without ice runs
Best Home Saunas 2026
Blankets, infrared cabins & barrels
Best Sauna Blankets 2026
The apartment heat habit, ranked
Best Red Light Panels 2026
Ranked by measured power per dollar
Best Massage Guns 2026
Ranked by amplitude, not marketing
Comparisons & protocols
Sauna vs. Cold Plunge
Which one, which order, or both
Infrared vs. Traditional Sauna
The 50°F gap the ads skip
Cold Plunge vs. Cold Shower
What the dose math says
Red Light vs. Infrared Sauna
Not the same thing at all
Cold Plunge After a Workout
The timing rules that protect your gains
Cold Plunge Temperature Guide
What temp, by goal and experience
DIY Cold Plunge vs. Buying
Stock tanks, chest freezers & real costs
Sauna for Sleep
The evening core-temp rebound protocol
Sauna After Running
The 32% endurance trick (Scoon protocol)