It depends. While you will have to be careful when doing weight-bearing exercises like step aerobics, you can also adjust the step’s height to accommodate specific ailments, like arthritis. On the other hand, your doctor or physical therapist may advise you to stay away from step aerobics if you have hip, foot, knee, or ankle pain. Before you sign up for a local step aerobics class or hire an instructor, be sure to get your doctor’s clearance.