Why is exercising important?

Exercising regularly is the major requirement these days. People who are working with busy schedules and still making time for a proper diet, as well as physical activity, are the fittest individuals. Now many people have queries like How to stay fit without exercise? 

but this is not at all a feasible query because exercising makes your body fit and if you are not doing any physical activity that can lead to a bad physique. Therefore exercising plays a vital role in terms of better health conditions.