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Side Plank

The Side Plank is a static core exercise that builds side core strength and stability while training balance and body control.

Bodyweight exercises

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Published: Apr 22, 2025 · Updated: Mar 15, 2026

The Side Plank is performed by supporting your body on one forearm and the side of your foot while holding a straight line from head to feet. This position builds strength in the obliques, hip stabilizers, and shoulder girdle. The side plank is one of the most effective bodyweight exercises for activating the gluteus medius alongside the lateral core muscles (Goller et al., 2024).

You should feel steady tension along the side of your waist and around the hips, with support from the shoulder on the working side. Abdominal muscle activation during sustained holds like this increases lumbar spinal stability, which protects the lower back during both training and everyday movement (Stokes et al., 2011). Focus on staying tall and keeping your hips stacked rather than holding as long as possible with poor form.

Side Planks fit well into core routines, warm-ups, or stability-focused workouts. To make the exercise easier, place your bottom knee on the floor. To increase difficulty, lift the top leg or extend the hold time while keeping full control. The simplicity and scalability of this movement make it valuable at every training level.

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Technique and form

How to perform the Side Plank

Lie on your side with your legs extended and feet stacked on top of each other.
Position your elbow directly beneath your shoulder with your forearm perpendicular to your body and hand flat on the ground.
Contract your core muscles and lift your hips off the floor, creating a straight line from your head to your feet.
Extend your top arm straight up toward the ceiling or place it on your hip for balance.
Breathe normally while maintaining tension throughout your body, especially in your core and glutes.
Keep your head in a neutral position by gazing straight ahead, not down at the floor.
Hold this position while maintaining proper alignment and avoiding any rotation in your hips or shoulders.
To exit the position, slowly lower your hips back to the floor with control.

Important information

Make sure your supporting shoulder stays pulled back and away from your ear to prevent unnecessary neck strain.
Keep your body in a perfectly straight line – avoid letting your hips sag or pike upward during the hold.
If the standard position is too challenging, modify by bending your bottom knee and keeping that leg on the floor for additional support.
Squeeze your glutes throughout the exercise to enhance stability and prevent lower back compensation.

Common Mistakes: Side Plank

Letting your lower back arch off the floor

Press your lower back into the ground throughout the movement. If it arches, the exercise is too advanced — try an easier variation.

Pulling on your neck

Keep your hands light behind your head or across your chest. Yanking on your neck causes strain and doesn't help your abs.

Swinging your body for momentum

Keep everything still except the joint you're working. If you need to swing, the weight is too heavy.

Not using full range of motion

Go through the complete movement from start to finish. Partial reps give partial results.

Rushing through reps

Slow, controlled reps work the muscle much better than fast, sloppy ones. Take your time on both the lifting and lowering phase.

Benefits of the Side Plank

Builds stronger side core muscles (obliques)

The Side Plank directly targets your side core muscles (obliques), helping you build strength and size in this area over time.

Focused muscle targeting

As an isolation exercise, the Side Plank lets you zero in on your side core muscles (obliques) without other muscles taking over. This is great for bringing up a weak point or adding definition.

Strengthens your core foundation

A stronger core improves your posture, protects your lower back, and makes you more stable during every other exercise you do.

Equipment advantage

Using your own bodyweight makes this exercise accessible anywhere without equipment, giving you a training benefit that's hard to replicate with other setups.

Train anywhere

The Side Plank can be done at home with minimal or no equipment, making it easy to stay consistent even when you can't get to the gym.

Muscles Worked: Side Plank

The Side Plank is an isolation exercise that focuses your effort on the side core muscles (obliques). Here's a breakdown of every muscle involved.

Primary muscles

Obliques — Your side core muscles (obliques) resist rotation and keep your torso steady. These are the main muscle doing the heavy lifting during the Side Plank.

Secondary muscles

Abs — Your abdominal muscles brace your core and keep your spine safe. While not the main focus, these muscles play an important supporting role.

The Side Plank primarily works 1 muscle with 1 supporting muscle assisting the movement.

Risk Areas

Abs

FAQ - Side Plank

What muscles does the Side Plank target?

The Side Plank primarily targets your obliques and transverse abdominis, while also engaging your quadratus lumborum, gluteus medius, and adductors as stabilizers. Your shoulders, particularly the deltoids, also work to maintain proper upper body alignment throughout the hold.

How long should I hold a Side Plank?

Beginners should aim for 20-30 seconds per side, while intermediate exercisers can target 30-60 seconds. Focus on quality over quantity - it's better to perform multiple shorter holds with perfect form than a single longer hold with compromised technique.

What are common form mistakes to avoid with Side Planks?

The most common errors include allowing your hips to sag toward the floor, rotating your torso forward or backward, and shrugging your supporting shoulder toward your ear. Maintain a straight line from head to heels, keep your body stacked vertically, and create space between your ear and shoulder.

How can I modify Side Planks if they're too challenging?

Perform the exercise with your knees bent at 90 degrees instead of legs extended, reducing the lever length and overall difficulty. Another effective regression is placing your bottom forearm on the ground instead of just your hand, creating a more stable base of support.

How often should I incorporate Side Planks into my routine?

Include Side Planks 2-3 times weekly as part of your core training, allowing at least 48 hours between sessions for recovery if you're performing high-intensity variations. For optimal results, alternate between left and right sides, gradually increasing hold time as your strength improves.

Scientific References

How to activate the glutes best? Peak muscle activity of acceleration-specific pre-activation and traditional strength training exercises

Goller M, Quittmann OJ, Alt T · Eur J Appl Physiol (2024)

Abdominal muscle activation increases lumbar spinal stability: analysis of contributions of different muscle groups

Stokes IA, Gardner-Morse MG, Henry SM · Clin Biomech (Bristol) (2011)

The effect of movement and load on the dynamic coupling of abdominal electromyography

King AC · Neurosci Lett (2018)

Sources are peer-reviewed academic publications from PubMed.

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Side Plank

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Workouts with Side Plank

Best Ab workouts

Ab workouts help strengthen the muscles at the center of your body: your rectus abdominis, obliques, and deep core. This plan combines bodyweight classics like crunches and leg raises with dynamic and weighted variations to challenge your abs from multiple angles. These workouts don’t just sculpt a six-pack: they improve posture, stabilize your spine, and support better performance in nearly every movement. Whether you're a beginner or more advanced, smart ab training supports both aesthetics and functional strength.

Best Core workouts

Core workouts focus on strengthening the muscles that support your spine and stabilize your entire body: your abs, obliques, and lower back. In these workouts, you'll combine bodyweight staples like crunches and planks with resistance-based movements to build both control and power. Whether you're chasing a stronger squat, better posture, or visible definition, core training plays a key role. The goal isn’t just six-pack abs, but a functional, injury-resistant midsection that supports everything you do inside and outside the gym.