Standing desks have become increasingly popular in recent years, as screen-tied office workers seek to reduce the time they spend sitting down. But a growing body of research suggests that the health concerns about sitting at work and the benefits of standing desks have been largely exaggerated, reports The New York Times. Several studies have found a link between prolonged periods of sitting and an increased risk of cardiovascular disease. But when the authors of a 2015 paper dug a little deeper, they found that sitting for long periods in certain situations—such as at work—didn’t have the same effect. Their conclusion: Sitting itself wasn’t the problem; it was likely just indicative of other risk factors. Unemployed people, for example, are more likely to spend large amounts of time sitting around at home and also have a higher risk of premature death. As for standing desks, their supposed benefits may be overblown. David Rempel, a professor of medicine at the University of California, San Francisco, says there is “no scientific evidence” that standing desks improve cardiovascular health. Alternating standing and sitting “may be useful for some people with low back or neck pain,” he says—but workers shouldn’t fool themselves into thinking that standing is a form of exercise.