I've swum through many cold water seasons, in all sorts of ways - for years I swam without a wetsuit, including a solo crossing of the English Channel, an official Ice Mile, and the lengths of two of Scotland's longest lochs. But when my son was born, everything about how I coped with the cold changed overnight. My energy dropped, my tolerance dropped, and I reached for every scrap of neoprene I owned - hat, gloves, socks, wetsuit and all.

That taught me something I now tell every swimmer I coach: cold water isn't about being tough or fearless, it's about understanding what your body needs. I've spent over fourteen years coaching people in cold water - complete beginners taking their first cold dip, right through to experienced swimmers who just wanted a better understanding of what was happening in their own bodies. And in that time, I've seen how much of the advice out there is either too vague to be useful, or written by people chasing extremes. Neither one actually helps you.

I created this guide to give you what I wish someone had handed me right at the start: the practical, honest, evidence-informed basics - how to prepare, how to get in, how to know when to get out, and how to warm up safely afterwards.