Walking Maintaining a healthy weight and staying active is good for the entire body.  A brisk walk will help increase bloodflow and will build the muscles around the knee.  Walking is a low-impact activity as well, so you are not damaging the joint while exercising. Cycling Cycling is another example of a low-impact activity that will raise your heart rate and help you stay in shape.  The motion of the pedals is natural on the knees, not forcing your leg to extend or bend further... Read More