This will be helpful in maintaining spine straight and develop specific gross muscles to maintain a right posture while standing, sitting or lying down.
In fact, the plank is a simple, safe and effective core exercise for training often neglected gross muscles of the body. It is also a yoga exercise.
To learn how to plank, proceed as follows:
Lie on your abdomen and take a deep breath to get into plank position in which your body makes a straight line from your heels to the top of your head.
Hold your breath 5-10 seconds to draw your navel toward your spine and tighten your buttocks.
Look at the floor breathe out.
Lower yourself back to the floor and breathe normally for 10seconds and repeat.
For a week do this for 15 minutes every day in the morning one hour before the meals or after the meals to get the perfect plank posture. Thereafter, do some simple planks exercises first and some advanced plank exercises.
For differently abled children the plank posture should be acquired through assisted and guided training as a therapy to strengthen their core and spine. For such children even therapy ball or medicinal ball may be used.