For a long time now, I’ve been interested in the effects of regular cold exposure. I once attended a Wim Hof class, in which we bathed in a tidal lagoon after a 13-kilometer trail run across sand dunes, and during a visit to Helsinki, I leaped into the Baltic Sea after emerging sweating from a sauna, immersing myself in the freezing, wild cold.
As TechRadar’s senior fitness editor, I have the dubious privilege of trying to parse through an endless procession of tech-infused wellness fads into my inbox. Some of them (vagus nerve stimulation, red light therapy gadgets, and so on) are more valid than others (those Ronaldo-sponsored electric muscle belts that are supposed to give you six-pack abs), so I approach a lot of it with a healthy pinch of salt.
