Protocols & Methods

Sauna Bathing · Finnish & Infrared Heat

The strongest human longevity signal for any heat protocol comes from one Finnish town followed for two decades.

Passive heat therapySaunas are sold as general wellness products and are not FDA-cleared to treat, prevent, or cure any disease. No medical device clearance underwrites the heart-health or longevity claims marketed by manufacturers.

Cold Water Immersion · Ice Baths & Plunge Tubs

Real recovery and mood signals, but skip the ice bath right after lifting if muscle is your goal.

Thermal recovery practiceNot an FDA-regulated medical treatment. Cold plunge tubs and chillers are sold as general wellness or recreational products, not cleared devices, and carry no approved disease claims.

Zone 2 Training · Aerobic Base Method

Training mostly below the first lactate threshold to build aerobic base, fat oxidation and mitochondrial capacity

Endurance training methodNot a regulated product; exercise training method, no FDA oversight.

Wim Hof Method · Breath, Cold & Commitment

Cyclic over-breathing, breath holds and cold exposure. One real immune study; most claims still outrun the evidence

Breath and cold protocolNot an FDA-regulated product; no drug or device clearance. Marketed as wellness training, not medical treatment.