Should I get a stand-up desk? Many workers who sit in front of a computer screen all day wonder if they should get a standing desk. Adults in the United States aged 65 and older struggle to meet physical activity guidelines, which generally call for 150 minutes of activity per week. According to research, many Americans spend up to 11 hours a day sitting. Women are specifically at an increased risk of having or developing health concerns associated with inactivity. More than 5 million people around the world die from causes associated with a lack of physical activity.