Your sciatic nerve is the largest nerve in your body that starts at your lower back and branches down your right and left legs. An inflammation of the sciatic nerve is known as sciatica. This condition occurs when a spinal disc or the disc material itself slips out of place, pressing on your sciatic nerve. This can cause extreme pain, tingling and numbness in your lower back and legs. Sciatica tends to come in flare-ups, where you experience extreme pain for one to two days. After these sciatica flare-ups you may wish to resume exercise carefully.
Stretch the hamstring muscles located on the back of your thigh. The hamstrings become tightened after a bout of sciatica, which can further pull on your lower back. Lie on your back with your legs extended and pull your right leg, which should be in a straight position, toward your chest. Grasp the back of your leg as you continue to bring it toward your body, feeling a stretch in the back of your leg. Lower this leg and repeat on the opposite side.
Engage in lower back stretching exercises to reduce residual muscle tension after a sciatica flare-up. Examples include lying on your stomach with your hands beside your shoulders. Slowly push against the floor to lift your shoulders off the ground, feeling the stretch in your lower back. You may not be able to straighten your arms fully after sciatica, but you can work toward this goal through regular stretches.
Work your cardiovascular system through low-impact exercises like walking, swimming or riding a bicycle. The leaned-forward position of bicycle riding can help relieve lower back pain after sciatica -- the other exercises do not place too much strain on your back. You may need to start with short increments when resuming exercise, such as 10 to 15 minute sessions to reduce pain.
Work your abdominal muscles to provide stability to your back. A stronger core takes pressure off your back muscles, which can reduce strain following a sciatica episode. Exercise examples include abdominal crunches, bicycles and pelvic tilts. To perform an abdominal crunch, lie on your back with your feet on the floor. Put your hands behind your hand and contract your stomach muscles to lift your shoulders off the ground. Lower your shoulders and repeat the exercise 10 to 15 times.