iet. Research shows that a brisk walk of a mile burns 100 calories. As a person get older they must curve there exercise so there will be no injury as a result of losing weight to fast.These are just a few benefits of regular exercise. Every person has his or her own individual exercise routine. Some may not require but a 15 to 30-exercise session, some may require more time to burn more calories. However, each exercise program is important for a better and healthier life. ...