Scientists have proved your mom right again: A recent study shows you should probably turn off the TV and go outside, as researchers found that people with a four-hour-a-day television habit were 46 percent more likely to die of any disease, and 80 percent more likely to die of cardiovascular disease. But the study's authors say the solution is not to go for a run or play basketball. "It's not the sweaty type of exercise we're losing, said study leader David Dunstan. "It's the incidental moving around, walking around, standing up and utilizing muscles." Even good aerobic exercise can be useless in the face of hours of sitting: "The implication of these findings is that the extraordinary amount of sitting can undo the good effects that we know are a benefit when we get regular exercise." So for God's sake, stand up, and do a lap around your desk.