A survey by the U.S. Centers for Disease Control and Prevention found obesity rates were frozen last year at around 28 percent of adults compared to 2008. But 34.7 percent claimed in 2009 they engage in regular leisure physical activity, up from 31.9 percent in 2008. And 39.8 percent said they had been tested for the AIDS virus, slightly more than 38.7 percent in 2008. Health experts and the U.S. government both recommend getting daily exercise -- about an hour a day of moderate exercise for most adults -- to keep weight off and prevent heart disease, diabetes and cancer. Some other facts from the CDC's National Center for Health Statistics: The prevalence of obesity among adults aged 20 and over has increased from 19.4 percent in 1997 to 28 percent in 2009; In 2009, 9 percent of adults 18 and over had diabetes, up from 8.2 percent in 2008 and 5 percent in 1997.
(2010). U.S. Centers for Disease Control and Prevention