Did you know, professional footballers from both sides of the pond are banned from skiing, even in the offseason, as the risk of injury is deemed too great?
Surfers, and more specifically the surfing world champ, is not nearly as worried about his ankles it turns out.
In fact, he spends much of the offseason testing the robustness of his tendons and fibulas by doing acid drops into backwash off a concrete wall adjacent to his home break.
Recently, JOB joined him for a bout of it. (Jump to the 2.26 mark to skip the fluff)