It’s 8am and I’m standing at the edge of my local lake at Beckenham Place Park in London, the early morning sun just beginning to peek over the trees. A layer of mist is rising from the cold water and ...

Dr. Mark Harper recalls his first cold-water swim in the south of England 20 years ago. It was August, but the initial jolt from the plunge took his breath away. The shock to his system lasted a ...