BROOKLYN, NEW YORK - JANUARY 2: People run on treadmills at a New York Sports Club January 2, 2003 in Brooklyn, New York. Thousands of people around the country join health clubs in the first week of the new year as part of their New Year's resolution. Many health clubs see a surge in business of 25 percent immediately after the new year, only to see those numbers level off by spring. (Photo by Spencer Platt/Getty Images)
