While nearly two-thirds of the U.S. population has a weight problem, statistics from the American Obesity Association say that only about 40 percent of physicians ever discuss the problem with patients. With obesity rates in children and adolescents running close to 15 percent, it’s no surprise that half of all adolescents watch two hours of TV a day. But their parents are not faring much better, chained to desks and imprisoned in cars on a long, daily commute.