How much time should you sit throughout the day? If you have an ordinary office job, the answer might shock you. Chances are you'll spend the vast majority of your days sitting down. That, researchers are discovering, is far from healthy. Consider a recent report from NPR. The news organization talked to a researcher at South Carolina University who completed a survey showing that men who sat more than 23 hours a week faced a 64 percent greater risk of dying from heart related illnesses than those who set under 11 hours per week.