Lunge: Contract your abdominal muscles and place your hands on your hip. Now extend your left foot forward while it is bent at the knee. Stretch your right leg behind you. Ensure that your right knee is at a right angle to the floor.
Maintain this position for about 10 counts and then release yourself from this position. Repeat this exercise with your right foot forward next time. Alternating each leg, do this exercise for 6 to 8 repetitions.