What's up, folks? Welcome back to the Whoop podcast, where we sit down with the best of the best to learn what they are doing to perform at their peak.

I'm your host, Will Amit, founder and CEO of Whoop, and we're on a mission to unlock human performance.

We've got a great podcast this week. I want to start

by giving a shout out, though, to two of our professional athletes, Rory McElroy and Patrick Mahomes,

who both had big Sundays this past weekend. Rory McElroy winning the Dubai Desert Classic in dramatic fashion,

and Patrick Mahomes leading the Chiefs to the Super Bowl.

I always find myself a little biased rooting for Woop athletes,

but it's very easy to be rooting for Rory and Patrick.

Congratulations, guys, on a phenomenal weekend.

All right. On this week's episode, our VP of Performance Science, Kristen Holmes,

is joined by scientist and winter swimming expert, Dr. Susanna Soberg,

who has a PhD in metabolism from the University of Copenhagen and is the founder of the Soberg Institute

and her science-backed program, The Thermalist Cure. Her methodology and science are derived from the

Scandinavian traditions of cold water swimming and its positive impact on the mind and body.

One of her principles is to end cold, to increase metabolism and prolong the benefits of

chemicals in the brain, a principle that Dr. Andrew Huberman from Stanford University named after

her, the Soberg Principle.

She's a best-selling author thanks to her book, Winter Swimming,

and her research has been featured on the Huberman Lab podcast, the Lex Friedman podcast, the Joe

Rogan Experience podcast, and more. Kristen and Susanna will discuss the benefits of cold and heat

therapy, the body's reaction to cold plunges, tips on how to build up the

habit of using cold therapy, the methodology of the sobered principle, the impact of cold

...