Admit it: do you arrive at your office every morning, plop yourself in your seat and basically stay there until you leave?

If so, it’s time to get moving. If you don’t have a standing desk like Tory does, some new recommendations: for every half-hour working in an office, we should sit for 20 minutes, stand for eight minutes and then move around and stretch for two minutes, says Alan Hedge, a Cornell ergonomics professor.

Researchers have identified at least 35 diseases, from diabetes and osteoporosis to cancer, that people who spend all day in a chair are at increased risk for. And they are developing prescriptions for how long people should spend sitting and standing, according to The Wall Street Journal.