Not all exercise movements are suitable for everyone. To reduce the risk of injury, consult your doctor before beginning this or any exercise program. The instruction presented herein is in no way intended as a substitute for medical counseling. If you have had a joint replacement or if you have osteoporosis, or any other special medical condition, follow all precautions. We are not a medical organization and cannot give you medical advice or diagnosis conditions. If you experience any pain or discomfort, or if you have a change in medical condition, you should immediately seek appropriate medical attention.