Lie down on your stomach with your face down toward the floor. SLOWLY and gingerly life the front part of your body with your head up. Lift as high as is comfortable; do not push it too hard. Keep your arms at your sides and hands on your hips. This exercise actives many tension-bearing back and leg muscles. Do this exercise ten minutes.
Ten times is enough for the first time. Repeat this exercise daily and keep adding repetitions. Over time, your back will strengthen and straighten out. No more poor body posture!