Billy Corbett's RetroFit
When Billy Corbett was still in high school in the late 1970s, he wrote letters to personal trainers in Hollywood, asking their advice on how he could become one too. Some of the trainers wrote back, giving him advice that he still remembers and utilizes today as head of Billy Corbett's RetroFit. There, he and his team of instructors lead groups through high-energy boot camps and personal-training sessions catered to individual goals. They also guide young people toward a healthy lifestyle with youth sports-conditioning classes.