In an extensive article, the Guardian talks about the history of excercise, why we need it, lifestyle change, technology and more:
Our relationship with exercise is complicated. Reports from the UK and the US show it is something we persistently struggle with. As the new year rolls around, we anticipate having the drive to behave differently and become regular exercisers, even in the knowledge that we will probably fail to do so. Why do we want to exercise? What do we expect it to do for us? We all know we are supposed to be exercising, but hundreds of millions of us can’t face actually doing it. It is just possible the problem lies at the heart of the idea of exercise itself.