Swimming beneath an endless expanse of sky brings freedom and fun — and when the weather is hot, it’s the perfect way to escape the city and cool down. Just ask Jamie Dornan, who is an avid cold water ...

The ritual begins with a bracing plunge into the river’s dark, peaty waters — a jolt to the senses that is as invigorating as it is refreshing. But this is no ordinary wild swim. Unlike the bare-bones ...