James McMillian, the president of Tone House in New York City, focuses on full-body workouts and follows a simple, high-protein diet. James McMillian James McMillian, the president of Tone House in NYC, has a few habits that keep him in shape. He works out twice a day on weekdays, leaving weekends free to spend time with his family. He also follows a very simple high-protein diet. Between coaching 10 workout classes a week and holding personal training sessions, James McMillian makes the most of his gym time. The president of Tone House, a strength training facility named "the hardest workout in New York City" by Business Insider , McMillian often goes to the gym twice a day at the height of training to prepare for competitions like Hyrox or marathons. He also completely abstains from training on weekends. "The weekend is my time where I spend with my family," McMillian told Business Insider.…