KNEE TO CHEST
You start this exercise the same way like the partial sit up. Begin the exercise by drawing one of your knees to your chest, using both hands (only one foot is now on air). Hold to the count of 10, then slowly release it to the rest position. Do 4-5 repetitions, and then repeat with your other leg, then both legs at the same time. This exercise stretches your glutes and back.
Start this exercise flat on your back with your arms extended out to the side. Bend your knees and lift your feet off of the ground. You will now rotate your hips to the side so that your legs become parallel with the floor. Rotate from side to side for 5-10 repetitions. This is another core exercise that strengthens your abdominal muscles.
Position yourself on all fours with hands directly beneath your shoulders and knees directly beneath your hips with your back straight. Use your abdominal muscles to push your back towards the ceiling, arching it like a cat. You should notice your head will point down towards the floor. Next, drop your back so that your lower back extends. Your head should raise when doing this. Make sure to keep your elbows straight the entire time, the only movement should be in your spine. Repeat this 12-15 times.
Lie face down with your arms extended above your head. Tighten your abdominal muscles and lift your arms and legs off the ground. It should look like you are in a Superman like flying position. Hold this for about 30 seconds and then release. You may be tempted to hold your breath when clenching your abdominal muscles. DON'T! Control your breathing while holding this position.
While seated in a chair, reach one arm across your stomach and grasp the opposite side of the chair. Look over the shoulder while rotating the low- and mid-back. Hold for 15-30 seconds.
SIDE LUMBAR BRIDGE
Lie on one side with your legs straight. Support the upper body by keeping the elbow directly beneath the shoulder. Being careful not to let the top hip rotate forward, engage the abdominals and use the torso to lift the hips. Hold this position for 10 to 15 seconds, maintaining a neutral neck and spine position.