For the first week or so, most patients walk slowly, leaning slightly forward to take tension off of the incision. After four to six weeks, you can begin progressive exercise, starting with low-impact aerobic activity, including extended walking and the gentle use of an exercise bicycle. Progressive exercise then allows you to slowly perform moderate aerobic activity, including brisk walks and the extended use of the exercise bicycle. You can lift light weights with your upper body or legs, as long as no strain is placed on the abdominal muscles. After two to three months, you may engage in more strenuous activity, including high-impact aerobic exercises.