According to the National Center for Health Statistics, the average American adult spends an unhealthy 6.5 hours a day sitting. If sitting is the new smoking, as has been said, then the first place to amend our sedentary ways is at work. A variable-height desk allows you to change from sitting to standing at the press of a button. Intermittent standing takes pressure off your spine, improves circulation, and reduces the risk of obesity, diabetes, and high-blood pressure associated with inactive lifestyles. Here are a few features to look for when trying to get back on your feet during the workday.