PLANK
Core Stability Foundation Exercise
Primary Muscles
Exercise Description
The plank is an isometric core exercise that builds anti-extension strength and full-body stability. It teaches you to maintain a neutral spine under tension.
How To Perform
Start in a forearm plank position with elbows directly under shoulders.
Keep your body in a straight line from head to heels.
Engage your core by bracing as if about to be punched in the stomach.
Squeeze your glutes and push your elbows into the ground.
Keep your head neutral, looking at the ground between your hands.
Hold this position for the target duration, breathing steadily.
Expert Tips
Full body tension - Squeeze glutes hard, brace core, and press forearms into ground. Every muscle should be engaged.
Neutral spine is key - Don't let hips sag or pike up. Maintain a straight line from head to heels.
Breathe consistently - Don't hold your breath. Take steady breaths while maintaining core brace.
Quality over duration - Perfect form for 30 seconds beats sloppy form for 2 minutes.
Common Mistakes
Sagging hips - Most common error. Squeeze glutes harder and brace core more.
Piking hips up - Don't lift hips to make it easier. Keep body straight.
Holding breath - Breathe steadily. Holding breath increases blood pressure unnecessarily.
Head position - Keep neck neutral. Don't look up or drop your head.
Video Guide – Plank
The plank is the foundational anti-extension core exercise. Unlike crunches which involve movement, planks are isometric—you hold a static position against gravity's pull. This teaches your core to do what it's actually designed for: preventing unwanted movement and maintaining spinal stability. Every time you stand, walk, lift something, or perform any activity, your core works isometrically to stabilize your spine. Planks directly strengthen this crucial function, making them exceptionally valuable for both performance and injury prevention.
What makes planks particularly effective is how they demand full-body integration. Your core must resist extension, your glutes must prevent hip sagging, your shoulders must stabilize your upper body, and your quads must keep your legs rigid. This coordinated full-body tension is what builds functional core strength—not isolated ab flexion. Research shows that plank-based training transfers better to real-world activities and athletic performance compared to traditional crunch-based training.
Watch the demonstration video carefully. Notice the perfect straight line from head to heels—no sagging, no piking. The forearms press firmly into the ground, creating shoulder stability. The glutes are visibly engaged, preventing hip drop. The breathing is steady and controlled despite the intense core contraction. This is what a perfect plank looks like—it's not just about holding a position, it's about creating maximum body tension while maintaining that position.
Program planks 3-4 times per week as part of your core training. Beginners should start with 3 sets of 20-30 second holds with perfect form. As you progress, extend duration to 45-60 seconds. Once you can hold a perfect plank for 60+ seconds, it's time to add difficulty: elevate feet, add weight to your back, or progress to single-leg variations. Remember: quality always trumps quantity. A 30-second plank with perfect form builds more core strength than a 2-minute plank with sagging hips.
Equipment Required
Exercise mat (optional for comfort)