Your core should be engaged and your body should be in a straight line from head to toe (a). (health.com)
How to: Start in a plank position with wrists directly under the shoulders, body in a straight line from head to toe (a). (health.com)
How to do it: Start in the «up» part of a push - up position, with your shoulders over your wrists, body in a straight line from head to toe, feet hip - width apart and a dumbbell in your right hand. (health.com)