Regular exercise is essential for many reasons, but unless approached in the right way, can be counterproductive and in some cases, harmful.
High-risk sports can put our bodies at risk of injury, which defeats the whole purpose of the exercise. You may not be playing rugby, boxing or mountain biking at high speed, so this may not sound relevant to you.
However, one of the most popular forms of regular exercise is considered a high-risk sport – running. The problem isn't running as such; it's running the wrong way.