The sea is mirror-like as the first rays of sunshine cast a golden shadow across the Cornish coastline. Although it's July, the cold water is enough to make me gasp. But as I look out towards the horizon, I can't imagine a much better way to begin the day.
“It's beautiful, isn't it?” says a woman as she swims past. I smile and nod before stepping into the water and spending the next 30 minutes swimming, alternating between breaststroke, front crawl and simply floating on my back. It's a world away from my usual early morning walking routine.
