Exercise guide
Side Plank Hip Adduction Bent Knee
- Intermediate
- Isolation
- Timed hold
- Shoulders
- Upper arms
- Waist
This variation of the Copenhagen plank targets the adductors and obliques by using a shortened lever arm, making it an excellent bridge for groin strength and lateral core stability.
Reviewed by the Crucible team · Updated June 2026
Muscles worked
Setup
- Place a flat bench on the floor and lie on your side perpendicular to it.
- Support your weight on your forearm with the elbow positioned directly under the shoulder.
- Place the knee of your top leg on the bench, keeping the knee bent at 90 degrees.
- Position your bottom leg straight out or slightly tucked under the bench.
How to do it
- Exhale and press your top knee firmly into the bench to lift your hips until your body forms a straight line from head to knee.
- Simultaneously lift your bottom leg off the floor, bringing it up to meet the underside of the bench.
- Inhale as you lower your hips back to the floor with control, maintaining tension in the core.
- Perform all reps on one side before switching to the other side.
Form checklist
- Keep your hips stacked vertically; do not let the top hip roll forward or backward.
- Maintain a neutral spine and avoid letting your hips sag toward the floor.
- Ensure the supporting elbow stays directly beneath the shoulder to prevent joint strain.
- Keep your core braced and glutes squeezed throughout the entire range of motion.
Pro tips
- Visualize 'crushing' the bench with your top knee to maximize adductor recruitment and stability.
- Keep your bottom leg active by pulling it toward the bench to engage the lower obliques and hip flexors.
Make it harder
- Transition to a straight-leg position with only your foot on the bench to increase the lever arm and mechanical demand.
- Add a dynamic element by driving the bottom knee toward your chest in a 'crunch' motion while holding the plank.
Frequently asked
- What muscles does the side plank hip adduction bent knee work?
- The side plank hip adduction bent knee primarily targets the abs, adductors, and obliques, and also works the deltoids, serratus anterior, and triceps as secondary muscles.
- What equipment do you need for the side plank hip adduction bent knee?
- The side plank hip adduction bent knee requires no equipment — just your body weight.
- Is the side plank hip adduction bent knee good for beginners?
- The side plank hip adduction bent knee is rated intermediate. Build a base with simpler variations first, then progress to it with light load and strict form.
Related exercises
- Front Plank To Toe TapIntermediate · abs, adductors, erector spinae, hamstrings, obliques, pectorals, and trapezius
- Side Plank Hip AdductionAdvanced · abs, adductors, deltoids, and obliques
- 45 Degrees Arms PlankIntermediate · abs, deltoids, obliques, and pectorals
- Alternate Knee Raise Side ReachBeginner · abs, deltoids, and obliques