Stop Calling It Contrast Therapy: What Sauna and Ice Baths Actually Do to Your Wiring
Sauna and cold immersion aren't doing the same thing from opposite directions. They're two separate training sessions for your autonomic nervous system, one teaching your body to ramp up under a clear challenge and the other teaching it to recover completely once that challenge is over.I'll be honest, I used to think the whole sauna-and-ice-bath thing was just a brutal ritual for fitness influencers. A test of pain tolerance with a fancy name: "contrast therapy." The explanation always felt shallow—heat opens your blood vessels, cold constricts them, and this "pump"...
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