Hard Rock Part 6

It’s about one week before I ‘rock the Rock’. My boot-camp is going well and included two open water swims with the Brighton Ice Bergs. The water during these swims was about 9C, and air temperature of about 8C. The rule of thumb for an open swim to be considered ‘Cold’ is where the sum of both the air and water temperatures is less than 20C. So, at 17C these swims were officially Cold, not that I needed an algorithm to know it was Cold!