Wim Hof explains why ice baths feel different from cold showers: partial contact in showers creates confusion, while full submersion blanks the mind. Cold showers still trigger thermogenesis and vascular training, so you're not missing out on real benefits without an ice bath.
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Are you missing out if you don't have an ice bath and only do cold showers? Hey, only cold showers is great. You know, when you get into the shower— sometimes the shower is more difficult than the ice bath for me. Because it only gets partially onto me. It gets my body confused. Ah, ah, ah! Like that, you know? Of course I keep cool because I'm a man. I'm strong. I'm gonna do as if I don't feel it. But I bloody hell feel it all the time. Ice bath is— you just plump in and you have no way of thinking of, is this cold or not? You are gone. You're obliterated. When you get into the icy water, you just shut up and adapt. Cold shower, okay, man. Thermogenesis is on. The training of your vascular system. Is really activated by going into a cold shower. Keep on going.