The Contrast Circuit (The "Fire and Ice" Buff)

This is the ultimate physical reset. Biohackers use "Fire" (Saunas) and "Ice" (Cold Plunges) to shock their systems into gear.

• You jump into 180 degrees F and above heat and then 40 degrees F water.

• This triggers "Cold Shock Proteins." Think of these like a "system repair" script that clears out cellular junk, boosts your immune system, and spikes your dopamine for hours without a crash.