Set-up: Set up on the floor resting on your hands and knees. Your upper legs should be perpendicular to the floor with your elbows in line with your hands, directly beneath your shoulders.
Lift: Brace through the core and maintain proper posture throughout. Hold for the prescribed amount of time.
Emphasis: Keep the shoulder blades back and together and do not allow the hips to sag.
Instructions and effects for the Planks - Quadruped exercise 
