How to Do Ab Scissors

To do ab scissors, lie on your back, brace your core, and alternate crossing straight legs without letting your lower back pop off the floor. This exercise targets the abdominals while challenging hip flexor control. It works well as a low-equipment core finisher for home or gym sessions.

What Does Ab Scissors Train?

Ab scissors primarily train the rectus abdominis and deeper trunk stabilizers that resist lumbar extension as your legs move. Hip flexors assist with leg lift and crossing, while obliques help keep your pelvis level. EMG research on abdominal exercise variants supports quality-first long-lever core work when trunk control is maintained (Escamilla et al.).

How Do You Perform Ab Scissors?

Set your trunk first, then move your legs slowly enough that your pelvis stays steady and your lower back keeps light contact with the floor.

1. Lie on your back with both legs extended, place your hands beside your hips or lightly under your glutes, and lift your heels 6 to 12 inches.
2. Exhale, brace your core, and flatten your lower back gently toward the floor without forcing your neck off the mat.
3. Cross your right leg over your left leg in a smooth motion while keeping both knees mostly straight.
4. Uncross and immediately cross the left leg over the right, keeping tension in your abs the whole time.
5. Continue alternating for the target reps or time, using a range of motion you can control.
6. Stop the set when your lower back starts arching, then rest and reset before the next round.

What Are the Benefits of Ab Scissors?

Ab scissors build trunk endurance and teach you to control leg movement without losing pelvic position.

• Improved lower-ab control: The alternating leg pattern challenges anti-extension strength rather than trunk flexion alone.
• Minimal equipment: You only need floor space, so it is easy to add at home.
• Scalable difficulty: You can adjust lever length, tempo, and work duration to match your level.
• Useful for other core drills: Better pelvis control carries over to planks, rollouts, and hanging leg work.

Common Ab Scissors Mistakes and Fixes

The most common mistake is letting the lower back arch as soon as the legs get tired.

Why does my lower back lift off the floor?

Problem: Your pelvis tips forward and the work shifts into your hip flexors and lumbar spine.
Why it happens: Legs are too low or set duration is too long for your current core control.
Fix: Raise leg height slightly and shorten the set to a range you can own.

Why do my reps look fast but feel sloppy?

Problem: You use momentum instead of controlled crossings.
Why it happens: Rushing to hit a number instead of holding trunk tension.
Fix: Slow each crossing to about one second each way and keep steady breathing.

Why does my neck get tight?

Problem: Neck and shoulders tense up during bracing.
Why it happens: You hold your breath and press your head forward.
Fix: Keep your head relaxed on the floor, exhale through each crossing, and reset between sets.

Why do my knees keep bending?

Problem: Bent knees reduce lever consistency and change the training target.
Why it happens: Fatigue or hamstring tightness.
Fix: Keep a soft knee bend if needed, but hold the same shape every rep.

Is Ab Scissors Good for Beginners?

Yes, if beginners start with short sets and a reduced leg range. A good entry point is 10 to 16 total crossings with heels higher than usual, or 15 to 20 seconds per set. If back discomfort appears, switch to dead bugs first and reintroduce scissors later.

How Do You Progress Ab Scissors?

Ab scissors are usually bodyweight only, so progression comes from control and time under tension instead of added load. This aligns with established progression principles that prioritize controlled increases in training demand over abrupt jumps (ACSM position stand).

For a simple 4-week progression, add 5 seconds per set each week while keeping the same crisp technique.

Progression Readiness Checkpoints

Move to a harder variation (lower leg height, longer sets, or slower tempo) only when all three are true:

1. You complete every set without your lower back losing floor contact.
2. You keep the same leg shape and crossing tempo from first rep to last rep.
3. You finish the set with clean breathing instead of breath-holding and neck tension.

How Often Should You Train Ab Scissors?

Train ab scissors 2 to 4 times per week, usually near the end of a session after compound lifts. Pair them with an anti-rotation move (for example, Pallof press) or an anti-extension pattern like ab wheel for balanced core work. For a full-week plan, align core accessory work with broad public-health activity targets so conditioning and strength volume remain sustainable (WHO physical activity recommendations).

How Does Ab Scissors Compare to Flutter Kicks?

Both are floor-based core drills, but ab scissors emphasize crossing control while flutter kicks emphasize rapid up-and-down leg alternation.

What Are the Best Alternatives to Ab Scissors?

The best alternatives keep the anti-extension focus but change difficulty, joint stress, or equipment demand.

Alternative Exercises

Raised-Legs Bicycle Crunch: Form, Muscles, Mistakes

Raised-legs bicycle crunch keeps both legs off the floor for more core demand. Get step-by-step setup, cues to keep your low back down, common mistakes, and progressions.

No equipment / Abdominals

Burpee Form: Muscles Worked, Scaling, Pacing Tips

Learn burpee form with a tight plank, clean footwork, and soft landings. Includes muscles worked, common mistakes, beginner scales, and interval progressions.

No equipment / Quadriceps, Glutes, Chest

Ab Scissors Form: Muscles Worked, Tips, Mistakes

Learn how to do ab scissors with good pelvic control and lower-back-friendly form. Includes muscles worked, coaching cues, common errors, and a simple progression plan.

No equipment / Abdominals, Quadriceps

Ab Wheel Rollout Form: Muscles Worked, Tips, Progressions

Learn how to do ab wheel rollouts with strong trunk positioning and better shoulder control. Includes muscles worked, mistakes, regressions, and a practical 4-week progression.

Other / Abdominals, Lats, Front Delts

Aerobics Form Guide: Benefits, Intensity, and Progression

Learn how to do aerobics with the right pace, posture, and progression. Includes muscles worked, beginner guidance, common mistakes, and weekly cardio programming.

No equipment / Cardio, Quadriceps, Glutes

Ball Slams (Medicine Ball Slam): Form, Muscles, Benefits

Learn ball slams (medicine ball slams) with step-by-step cues, muscles worked, common mistakes, and ball weight guidelines for power or conditioning.

Other / Abdominals, Lats

Dead bug

Best for: Beginners learning rib and pelvis control.
Key difference: Opposite arm-leg pattern reduces spinal load.
Difficulty: Easy to moderate.

Hollow body hold

Best for: Building static trunk tension for gymnastics-style core strength.
Key difference: Isometric hold instead of alternating crosses.
Difficulty: Moderate.

Reverse crunch

Best for: People who struggle to keep lower back position during long sets.
Key difference: Dynamic pelvic tilt with shorter lever.
Difficulty: Moderate.

Do You Need Any Equipment for Ab Scissors?

A mat is usually enough. If your lower back feels pressure on hard flooring, use a thicker pad under your pelvis. A timer is helpful so you can progress by seconds instead of guessing.

Frequently Asked Questions