Movement: Start from a quadruped position. Now lift your hips and knees off the ground so that your feet, hips and shoulders form a straight line. From this position raise one arm out in front to full extension, while bracing through the core and maintaining stability. Hold for the prescribed time. Then switch arms, then repeat with each leg.
Repetitions: Each limb raise counts as one repetition.
Instructions and effects for the Three-Point Plank - Alternating exercise 
