Is Goop-endorsed cold therapy bunk or actually restorative?
This is Wim Hof, the "Iceman," a father of four, and creator of the Wim Hof Method, a health trend featured on episode 2 of Gwyneth Paltrow's Goop Lab.
Step 1: learn a new way to breathe.
The method involves cyclic hyperventilation and breath-holding.
Some view it as meditation.
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The method doesn't come without risk. The breathing technique reduces levels of CO2 and ups the pH in the blood, a shift that can cause confusion, dizziness, and fainting.
Frigid water often prompts an involuntary gasp, a move which can cause people to drown. Cold plunges also trigger the body's fight or flight response, and in some cases, can induce "cold shock" and heart arrhythmias.
Potential Benefits:
Some small studies show the method enables people to voluntarily influence their autonomic nervous system and immune system -- bodily functions previously thought out of reach of the human mind.
But more randomized-controlled trials are needed before we can understand how the method impacts the mind and body.