Walking continues to be one of the most effective and easiest exercises for all body types and fitness levels, a chance to use your core muscle groups, burn extra calories and elevate the heart rate. Whether you want to lose weight or get in shape, walking is an effective exercise that can help you trim down and shape up. Still, your body can adapt to this aerobic routine fairly quickly, which means you won't be burning as many calories as you were when you first started your routine. ...