Episode 4 of The Wim Hof Podcast welcomes Zac Aynsley, a well known men's physique body builder, in the global fitness industry, originally from the UK but now based in the Netherlands. In the episode, among many other topics, they talk about the positive effects the breathing technique has had on his training, and also for his girlfriend and her recovery from lymphoma cancer.

You can find Zac on Instagram: @ZacAynsley
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