The plank into lunge is a dynamic mobility and core exercise performed without equipment that moves from a high plank into a low lunge and back, training theabsand hip flexors. Stepping a foot from plank to outside the hand asks the hip flexor to lift the leg through a long arc while the trunk stays braced on three points, then stretches the opposite hip flexor in the lunge. That combination of brace and stretch is what a plain plank or a standing lunge cannot give. Coaches program it in warm-ups before squats and as core work in circuits.
What Muscles Does the Plank Into Lunge Work?
- Primary: Rectus abdominis, hip flexors (iliopsoas, rectus femoris)
- Secondary: Obliques, gluteus maximus, anterior deltoids, serratus anterior
- Tertiary: Quadriceps, hamstrings, triceps, wrist stabilisers
How Do You Set Up for the Plank Into Lunge?
Set up on a non-slip floor in a high plank with your hands directly under your shoulders and your fingers spread. Bring your feet together and tuck your toes under so your legs are straight and your body forms one line from heels to head. Tuck your pelvis slightly, squeeze your glutes and press the floor away so your shoulder blades sit flat. Look down between your hands and brace.
How Do You Perform the Plank Into Lunge?
- Lock the plank by pushing the floor away and pulling your ribs toward your hips.
- Lift your right foot and swing it forward under your body, keeping the hips level.
- Plant the right foot outside your right hand, landing in a low lunge with the knee stacked over the ankle.
- Sink your hips for a beat so the left hip flexor stretches, left leg straight, both hands still on the floor.
- Push through the right foot and drive it back to the plank, landing beside the left foot without a bounce.
- Repeat on the left side, alternating legs each rep until the set is complete.
What Are the Key Form Cues?
- Step, do not drag: the foot travels through the air and lands flat outside the hand in one clean motion.
- Keep the hips low on the return: drive the leg back from the glute so the hips never pike toward the ceiling.
- Push the floor away with both hands through the step so the shoulders stay stacked.
- Let the rear heel reach back during the lunge to deepen the stretch through the front of that hip.
- Exhale on the step forward and inhale as you return to the plank.
What Are the Most Common Mistakes?
- Piking the hips to bring the foot forward: lifting the hips shortens the arc and unloads the abs, so keep the hips in line with the shoulders as the leg travels.
- Landing the foot short, inside the hand: the knee collides with the elbow and the lunge stays shallow; aim the foot outside the hand every time.
- Letting the shoulder collapse on the stepping side: the elbow bends and the trunk twists; press tall through both hands.
- Sagging the lower back in the plank between reps: a dropped pelvis loads the lumbar spine under the body's weight, so re-tuck the pelvis before each step.
- Bouncing the foot back with a hop: the return loses control and the plank lands soft; drive the leg back at the same speed it came forward.
What Are the Best Plank Into Lunge Variations?
- Plank step-out: the foot steps sideways rather than forward, an easier drill with a shorter arc.
- Plank into lunge with reach: at the lunge, lift the same-side hand and reach it toward the ceiling, adding a thoracic rotation.
- Spiderman mountain climber: the same foot path at running speed, for conditioning rather than mobility.
- Single side plank into lunge: all reps on one leg before switching, loading one hip flexor harder.
- Sliding disc plank into lunge: the foot slides forward on a disc, keeping constant tension through the abs.
How Do You Progress the Plank Into Lunge?
- Add reps: build from 5 per side to 10 with a full-depth lunge before changing anything.
- Add a set: work from 2 to 4 sets per session at the same rep target.
- Add a hold: pause the lunge for two seconds and squeeze the rear glute before returning.
- Slow the return to a two-count and hold the plank for a beat between reps.
How Should You Program the Plank Into Lunge?
Use the plank into lunge in the warm-up before squats or lunges, or as core work near the end of a session, two or three times a week. Perform 2 to 4 sets of 6 to 10 reps per side, resting 45 to 60 seconds between sets. It pairs with a hip flexor stretch in the warm-up, or with a hollow body hold when programmed as core work.