A cold-water cure? My weekend with the Ice Man

Wim Hof claims cold-water immersion can help fight modern diseases. As outdoor swimming becomes ever more popular in the UK, photojournalist Jonny Weeks joined him for a weekend to experience it firsthand Look at this beautiful tree. An oak, Quercus robur. Its yelling at us, Helloooo! says Wim Hof, the doyen of cold endurance stunts, as we head across Hampstead Heath, north London, for a swim in one of the ponds. Soon hes catapulting himself into a gaping hole in its trunk, peeping out excitedly like a child. Here I am, talking to the tree, he beams. I see the tree has personality. I go in. We are one. Its alive. We are alive. Is that crazy? Bloody crazy! Yes …