As we enter the second decade of the 21st century, there is one thing nearly all modern Americans have in common: we sit all the time. Though our great shift towards computer-based work has done great things for productivity, it has, unfortunately, done terrible things for our health. From increased risk of heart disease and obesity in the long term, to sharply hampered cholesterol maintenance in the short term, the negative health effects of sitting are starting to weigh heavily against the benefits. Even the medical field â€“ the greatest advocates of reducing sitting time â€“ is plagued by this new health issue. Though doctors and nurses get plenty of walking time, it usually falls to the secretaries, billers, and coders to do all the sitting. And, as we can see, something has to change.