Exercise plays an important role in being fit. Any types of exercise are better than no exercise. But the best kind is regular aerobic exercises. Although walking as a moderate exercise has been proved to improve health and prolong life. It is aerobic benefits of walking which provide long term benefits.
As you walk and walk briskly, large muscle groups in legs and arms come into rhythmic movement. To provide oxygen to these muscles, you breathe deeply, taking in more oxygen, making your heart pump faster.
To be really useful, an exercise routine should bring into action all muscles of the body in a natural way. As both arms swing to and fro in a natural motion, the movement strengthens the muscles of heart, lung, chest and back. However, since walking is gentle in character, one must walk several kilometers briskly to constitute a fair amount of exercise.
A regular daily walk is the simplest way to prevent deposition of fat and maintain circulation in the extremities. A daily walk of 3.5 kms at moderate speeds adds up to 100 kms in a month and if coupled with dietary restriction makes a significant contribution to weight reduction. Twenty minutes of brisk walking may bring blood glucose down by 20mg/dL.
Early morning is arguably the best time to walk.