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Side Plank

The side plank is an isometric core exercise that involves holding your body in a straight line while supported on one forearm and the side of one foot, targeting the obliques. It suits lifters who want to build lateral core stability and anti-rotational strength without equipment.

Muscle group
Core
Primary muscles
obliques
Equipment
Bodyweight

How to do the Side Plank

  1. Lie on your right side with your right forearm on the ground, elbow directly under your shoulder, and feet stacked or staggered.
  2. Engage your core and lift your hips off the ground until your body forms a straight line from head to feet.
  3. Keep your head neutral and align it with your spine, avoiding any tilting or rotation.
  4. Hold this position for the prescribed duration while breathing steadily.
  5. Lower your hips with control and repeat on the left side.

Form tips

  • Push your bottom forearm into the ground and think about lifting your ribs away from the floor to prevent sagging at the hips.
  • Squeeze your glutes and brace your core as if preparing for impact to maintain a rigid, straight body line.
  • Stack your shoulders vertically so your top shoulder is directly above your bottom shoulder, preventing forward or backward rotation.

Common mistakes

  • Letting the hips sag toward the ground: this reduces oblique engagement and places unnecessary stress on the lower back.
  • Rotating the torso forward or backward: this shifts tension away from the obliques and compromises spinal alignment.
  • Holding your breath: this increases internal pressure unnecessarily and reduces time under tension due to early fatigue.

Sets and reps

For core strength and endurance, perform 3 to 4 sets per side, holding for 20 to 60 seconds depending on your ability level.

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Frequently asked questions

Should my feet be stacked or staggered in a side plank?
Stacking your feet increases difficulty by narrowing your base of support, while staggering them with the top foot in front provides more stability for beginners. Progress to stacked feet as your oblique strength improves.
How do I make the side plank harder?
You can increase difficulty by adding hip dips, raising your top leg, holding a weight on your top hip, or elevating your feet on a bench. Each variation increases the demand on your obliques and overall core stability.
Why does my shoulder hurt during side planks?
Shoulder discomfort often occurs when your elbow is not directly under your shoulder or when you are not actively pushing the ground away. Ensure proper alignment and engage your shoulder stabilizers by pressing firmly into the ground throughout the hold.

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