Bad news for standing desk zealots: you may not be as superior to your seated counterparts as you think. Researchers at the University of Sydney have found that standing desks do not seem to reduce the risk of heart disease — and they may actually increase circulatory issues like varicose veins.

In recent years, more people have been opting for standing work to counteract the negative effects of a sedentary lifestyle. Standing desks are becoming standard in many offices, and employees often spend entire days in this position.