:
It may expand your waistline
Here's another reason to skip the commercials, in addition to watching less TV: “Most people think, 'Well you spend a lot of time sitting around, so you gain weight. ' But most of the impact is just because of the marketing and advertising during that time that tends to increase intake of a range of unhealthy food products,” says Steve Gortmaker, a professor of the practice of health sociology in the Harvard T. H. Chan School of Public Health.