Ardha Chaturanga Dandasana (Plank Pose) can be a difficult pose but has so many benefits. It builds wrist, arm, abdominal, shoulder and back strength. If you are new to plank you can vary the pose by bringing your knees to floor or pressing heels into wall to energize legs. Every extra second or additional breath in this pose counts. So try to stay for one more breath! You can do it!