Image Credit: Strong Nation Cobra Kai came to an end earlier this year, but Tanner Buchanan is holding the memories he made and his acquired martial arts skills close to his heart. In an exclusive interview with Hollywood Life, the 26-year-old actor shared that he keeps in shape through the high-intensity, boot camp-style group exercise course STRONG Nation. "What I like about it is you can kind of do it anywhere," Tanner said while explaining how the exercise program fits into his work schedule.