Lying Scissors Cross

Body Part: Hips

Muscle: Other

Equipment: Body Weight

Lying Scissors Cross is a bodyweight floor exercise where you lie on your back and alternate your straight legs in a crossing scissor pattern. The movement looks simple, but the challenge comes from keeping the trunk quiet while the legs move in opposite directions. It is commonly used to train lower-abdominal control, hip flexor endurance, and the ability to hold a stable pelvis while the legs travel through a long lever.

The setup matters because the exercise is easy to turn into a lower-back arch or a rushed leg swing. Start flat on the floor with your arms along your sides or lightly pressing into the mat for balance. Before the first rep, set your ribs down, brace your midsection, and keep the pelvis from tipping forward as the legs lower and cross. If your hamstrings are tight, soften the knees a little rather than forcing a range you cannot control.

The best repetitions are smooth and even, with one leg lowering as the other lifts, then switching sides without bouncing. The crossing action should come from controlled hip movement, not from momentum or a big kick. Keep the legs long, the neck relaxed, and the lower back anchored. If the floor contact starts to peel away or the motion gets jerky, reduce the range or slow the tempo before the set gets sloppy.

This exercise fits well in core sessions, warmups, and accessory work when you want floor-based abdominal tension without equipment. It can also be used to reinforce pelvic control for running, cycling, and other activities that demand strong trunk position while the legs alternate. Beginners can use a smaller range and bent knees; more advanced lifters can slow the lowering phase, pause in the crossing position, or keep the legs lower to the ground while maintaining clean form.

Instructions

• Lie on your back on a mat with your legs extended and your arms long by your sides, palms down for balance.
• Press your lower back gently into the floor and set your ribs down before the first rep.
• Lift both legs a few inches off the floor so the heels stay clear and the knees remain long or only slightly soft.
• Lower one leg toward the floor while the other leg lifts, crossing the legs in a controlled scissor pattern.
• Keep the legs straight enough to stay active, but do not lock the knees if that pulls your pelvis out of position.
• Switch sides smoothly and keep the movement small enough to avoid arching your lower back.
• Breathe out as the legs separate and cross, then inhale as you switch to the other side.
• Stop the set if your neck tenses, the motion turns into a kick, or your back starts to lift off the mat.
• Reset with your heels down if needed, then start the next rep from a stable hollow-body position.

Tips & Tricks

• Keep the scissors low enough that your low back stays heavy on the mat; range matters less than control.
• Think about lengthening through the heels instead of flicking the feet quickly through the air.
• If your hip flexors take over, shorten the lever by bending the knees slightly for a few reps.
• A small crossing pattern is usually better than a big, dramatic cross that twists the pelvis.
• Pressing the palms lightly into the floor can help you stop your shoulders and ribcage from rocking.
• Slow the lowering leg on the way down; the negative phase is where the trunk has to resist the most.
• Stop before the legs touch the floor if that contact makes you lose abdominal tension.
• If your hamstrings cramp, raise the legs a little higher and reduce the tempo until the set feels smooth.
• Use this as a quality core drill, not a speed drill; clean reps are the point of the exercise.

Frequently Asked Questions

What does Lying Scissors Cross train?

It mainly trains lower-abdominal control, hip flexor endurance, and the ability to keep the pelvis steady while the legs move.

Should my legs stay straight during the movement?

Mostly yes, but a slight bend is fine if straight legs pull your low back off the floor or make the hamstrings cramp.

How low should I lower my legs?

Only as low as you can keep your lower back anchored and your breathing smooth. Lower is not better if the trunk starts to arch.

Where should I feel this exercise?

You should feel a strong hold through the lower abs and hip flexors, with some inner-thigh work as the legs cross.

What is the biggest form mistake?

The most common error is turning the movement into a fast kick that rocks the hips and lets the lower back arch.

Can beginners do Lying Scissors Cross?

Yes. Beginners should start with a smaller range, higher leg position, or bent knees until they can keep the torso quiet.

How can I make the exercise harder?

Slow the lowering phase, keep the legs closer to the floor, or pause briefly as the legs cross while the pelvis stays still.

Is this the same as a flutter kick?

No. Flutter kicks alternate up-and-down leg motion, while this variation crosses the legs in a scissor pattern.

Do I need equipment for this exercise?

No. A mat is helpful, but the exercise is performed with body weight only.