Chris Martin Visits "The Elvis Duran Z100 Morning Show"Chris Martin(Photo by Cindy Ord/Getty Images) COLDPLAY frontman CHRIS MARTIN is convinced his unusual dieting decision to fast one day a week has improved his vocals. The singer, 38, previously touched on his eating habits, revealing he had adopted the 6:1 diet, which encourages followers to skip food once every seven days and only drink water. “I started to miss a day of food once a week and at first I thought, ‘This is crazy!’,” he told U.S. talk show host Ellen DeGeneres in December. “And then I found that it made me really grateful for food and life in general.” Now,
