The more TV you watch, the higher your odds for being overweight and developing type 2 diabetes. In one study of over 9,000 women and men, normal-weight people watched about 2.3 hours of TV a day, while overweight people watched 2.6 hours and the obese watched three hours or more. A Harvard School of Public Health study of 37,000 men found that those who watched lots of TV — 40 hours or more a week — were three times more likely to develop diabetes as those who watched less than 10 hours a week. Here are some ways to cut down on your TV time.