Exercise more seems to be a popular resolution for the new year.
A common agreement among people around me is that "cardio is boring." I can understand how others may think that. Repetitive motion is not as entertaining as sports, and the fitness industry thrives on products that sell exercise as "fun." There are countless programs that mask tedious movement with the shouting of cult-like coaches, loud music, and flashing lights. But I think without finding an impetus for repetitive movement--exercise--in itself, the dependency on distracting entertainment, including sports, is unsustainable.
Repetitive motion may be tedious and mind-numbing, but I think those that enjoy it do so for those exact reasons. Like all forms of practice, it bears fruit. Many people I meet tell me that "cardio is not for me," but I think progress is supposed to be hard and painful. The long-term benefit of regular exercise is indisputable, but can be invisible for most of your life, and few people have the patience for such a long feedback loop.
Furthermore, running, for example, has become a mental exercise for me. It reminds me of our interconnectedness with our physical environment, whether it's a moving belt or the dirt and rocks among the trees. It gives my eyes a break from the computer screen. Taking my daily steps is no longer a dilemma I have with myself, but a ritual of a high priority.