Scissor Kick

The scissor kick is a bodyweight core exercise performed lying supine on the floor, alternating small straight-leg raises in a crossing pattern. It primarily targets the lower rectus abdominis and hip flexors while also engaging the obliques for lateral stability. Because it relies on continuous tension rather than a large range of motion, it builds muscular endurance in the deep core rather than raw strength. The exercise requires no equipment and is commonly used as a finisher in core-focused training.

Muscles Targeted

• Primary: Rectus abdominis (lower fibers), hip flexors (iliopsoas)
• Secondary: Obliques, quadriceps (rectus femoris)
• Tertiary: Transverse abdominis, lower back stabilizers

Starting Position

Lie flat on your back on a mat with your legs extended and together. Tilt your pelvis slightly to press your lower back flat into the floor, and place your hands under your glutes or lightly at your sides for support. Lift both legs a few inches off the ground before beginning the scissoring motion.

Execution Steps

1. Brace your core and press your lower back flat against the floor before moving your legs.
2. Lift one leg toward the ceiling at roughly a 45-degree angle while the other hovers just above the floor.
3. Switch leg positions in a scissoring motion, crossing one leg over the other's path without letting them touch.
4. Keep both legs straight, allowing only a slight knee bend if needed to protect the lower back.
5. Continue alternating at a controlled, steady tempo rather than kicking rapidly.
6. Maintain flat lower back contact with the floor for the entire set.
7. Lower both legs slowly to the floor with control to finish the set.

Form Cues

• Keep your lower back pressed into the floor throughout; if it arches, raise your legs higher until contact returns.
• Move from the hips, not the knees - legs stay long and controlled.
• Exhale on each leg switch to keep the core braced.
• Keep the movement slow and controlled instead of fast, kicking motions.
• If you add a lifted-head variation and feel neck strain, keep your head resting on the floor instead.

Common Mistakes

• Letting the lower back arch off the floor: reduces core engagement and increases lumbar strain; raise the working leg higher to restore contact.
• Kicking too fast: momentum replaces muscle tension and reduces effectiveness; slow the tempo down.
• Bending the knees excessively: turns the movement into a different exercise; keep the legs as straight as form allows.
• Holding the breath: raises intra-abdominal pressure unnecessarily; breathe steadily throughout.
• Pulling on the neck during a lifted-head variation: strains the cervical spine; let the core, not the neck flexors, drive the movement.

Variations

• Bent-knee scissor kick: reduces hip flexor demand and lower back stress, better for beginners.
• Vertical scissor kick (flutter kick): legs move up and down instead of side to side, shifting the loading pattern slightly.
• Weighted ankle scissor kick: ankle weights add resistance for more advanced trainees.
• Scissor kick on a decline bench: increases range of motion and core demand.
• Side-lying scissor kick: shifts emphasis toward the obliques and hip abductors.

Tips for Progression

• Hold each leg position for a one-count before switching to increase time under tension.
• Add sets or extend duration (for example, from 20 seconds to 45 seconds per set).
• Slow the tempo to increase difficulty without adding load.
• Progress to ankle weights once bodyweight reps become easy with strict form.

Training Notes

Program scissor kicks 2-3 times per week as part of a core circuit or as a finisher after your main lifts. Perform 2-3 sets of 15-20 reps per leg or 20-40 seconds of continuous work, resting 30-45 seconds between sets. Because it is low-impact and equipment-free, it works well in both gym and home settings.