The article has a certain bias and tone. A lot of points are just kind of swept under with this quote "the biological processes unleashed by physical activity a

The article has a certain bias and tone. A lot of points are just kind of swept under with this quote "the biological processes unleashed by physical activity are still relatively mysterious. For all the known benefits of a short loop around the park, scientists are, for the most part, incapable of explaining how exercise does what it does." The biological process in the human body that depend on upright motion include far more than just simple muscle stimulation and growth. The circular system is meant to work against gravity in concert with muscle contraction. It should be relatively obvious that there's indeed far more to exercise and basic bodily functions than this pill covers.