Walking is encouraged early post-surgery and thereafter, on a regular basis to increase your physical activity level. Aerobic activities such as brisk walking, stationary biking, elliptical machines, etc. may be engaged 2 weeks after surgery and are limited generally by the degree of discomfort that these activities cause. You may engage in swimming once the wounds are fully healed. Activities that are more strenuous or that involve lifting weights are generally safe 4 weeks following surgery and you are given clearance by the surgeon.