10 Best Lying Leg Raise Flat Bench Alternatives for Limited Equipment
If you can’t do the lying leg raise on a flat bench, use movements that preserve posterior pelvic tilt and target the rectus abdominis and lower core. Effective swaps include hanging knee raises, reverse crunches, captain’s chair raises, flutter kicks, and plank march progressions. Cue a tucked pelvis and slow eccentric control to protect the lumbar spine.
Original Exercise: Lying Leg Raise Flat Bench
How to Perform Lying Leg Raise Flat Bench
- Lie flat on a flat bench with your back pressed against it.
- Place your hands under your glutes for support.
- Keep your legs straight and together, and lift them up towards the ceiling.
- Pause for a moment at the top, then slowly lower your legs back down to the starting position.
- Repeat for the desired number of repetitions.
Best Lying Leg Raise Flat Bench Alternatives
1. Exercise Ball Crunch
94.4% MatchHow to perform this exercise
- Lie on an exercise ball with your lower back curvature pressed against the spherical surface of the ball. Your feet should be bent at the knee and pressed firmly against the floor. The upper torso should be hanging off the top of the ball. The arms should either be kept alongside the body or crossed on top of your chest as these positions avoid neck strains (as opposed to the hands behind the back of the head position).
- Lower your torso into a stretch position keeping the neck stationary at all times. This will be your starting position.
- With the hips stationary, flex the waist by contracting the abdominals and curl the shoulders and trunk upward until you feel a nice contraction on your abdominals. The arms should simply slide up the side of your legs if you have them at the side or just stay on top of your chest if you have them crossed. The lower back should always stay in contact with the ball. Exhale as you perform this movement and hold the contraction for a second.
- As you inhale, go back to the starting position.
- Repeat for the recommended amount of repetitions.
2. Arms Overhead Full Sit-up (male)
93.1% MatchHow to perform this exercise
- Lie flat on your back with your knees bent and feet flat on the ground.
- Extend your arms overhead, keeping them straight.
- Engaging your abs, slowly lift your upper body off the ground, curling forward until your torso is upright.
- Pause for a moment at the top, then slowly lower your upper body back down to the starting position.
- Repeat for the desired number of repetitions.
3. Cocoons
91% MatchHow to perform this exercise
- Lie flat on your back with your knees bent and feet flat on the ground.
- Place your hands behind your head with your elbows pointing outwards.
- Engaging your abs, slowly lift your upper body off the ground, curling forward until your torso is at a 45-degree angle.
- Pause for a moment at the top, then slowly lower your upper body back down to the starting position.
- Repeat for the desired number of repetitions.
4. Decline Sit-up
90.2% MatchHow to perform this exercise
- Lie on a decline bench with your feet secured and your knees bent.
- Place your hands behind your head or across your chest.
- Engage your abs and lift your upper body off the bench, curling forward towards your knees.
- Pause for a moment at the top, then slowly lower your upper body back down to the starting position.
- Repeat for the desired number of repetitions.
5. Decline Crunch
89.7% MatchHow to perform this exercise
- Lie on a decline bench with your feet secured and your knees bent at a 90-degree angle.
- Place your hands behind your head or across your chest.
- Engage your abs and lift your upper body towards your knees, curling your torso.
- Pause for a moment at the top, then slowly lower your upper body back down to the starting position.
- Repeat for the desired number of repetitions.
6. Crunch (on Stability Ball, Arms Straight)
89.4% MatchHow to perform this exercise
- Sit on the stability ball with your feet flat on the ground and your knees bent at a 90-degree angle.
- Lie back on the ball until your lower back is supported and your upper body is parallel to the floor.
- Place your hands behind your head or cross them over your chest.
- Engage your abs and lift your upper body off the ball, curling your shoulders towards your hips.
- Pause for a moment at the top, then slowly lower your upper body back down to the starting position.
7. Crunch (on Stability Ball)
88.9% MatchHow to perform this exercise
- Sit on the stability ball with your feet flat on the ground and your knees bent at a 90-degree angle.
- Lie back on the ball until your lower back is supported and your upper body is parallel to the floor.
- Place your hands behind your head or across your chest.
- Engage your abs and lift your upper body towards your knees, curling your torso forward.
- Pause for a moment at the top of the movement, then slowly lower your upper body back down to the starting position.
8. Butt-ups
88.9% MatchHow to perform this exercise
- Lie flat on your back with your knees bent and feet flat on the ground.
- Place your hands by your sides, palms facing down.
- Engaging your abs, lift your legs off the ground, bringing your knees towards your chest.
- At the top of the movement, squeeze your abs and pause for a moment.
- Slowly lower your legs back down to the starting position.
9. Crunch Floor
88.3% MatchHow to perform this exercise
- Lie flat on your back with your knees bent and feet flat on the ground.
- Place your hands behind your head with your elbows pointing outwards.
- Engage your abs and lift your shoulders off the ground, curling forward towards your knees.
- Pause for a moment at the top, then slowly lower your shoulders back down to the starting position.
- Repeat for the desired number of repetitions.
10. Crunch (hands Overhead)
88.3% MatchHow to perform this exercise
- Lie flat on your back with your knees bent and feet flat on the ground.
- Extend your arms straight above your head.
- Engaging your abs, lift your upper body off the ground, curling forward towards your knees.
- Pause for a moment at the top, then slowly lower your upper body back down to the starting position.
- Repeat for the desired number of repetitions.
Why You Might Need a Lying Leg Raise Flat Bench Alternative
You may need substitutes because of lower-back pain, weak hip flexors, lack of equipment, or a desire to change the loading pattern. Lying leg raises create a long lever that increases lumbar shear; bent-knee reverse crunches shorten that lever and emphasize rectus abdominis through posterior pelvic tilt. Hanging knee raises let you scale leverage while training hip flexion and core control. If hip-dominant movement takes over, pick exercises that cue transverse abdominis engagement and active pelvic tuck to shift load to the abdominal wall instead of the iliopsoas.
How to Choose the Right Substitute
Choose based on your pain profile, available equipment, and training goal. For lower-back sensitivity pick bent-knee reverse crunches or plank variations that emphasize posterior pelvic tilt and limit lumbar extension. For progressive strength work choose hanging knee-to-leg raises and progress by straightening the legs or adding slow 3–4 second eccentrics to increase time under tension. If you only have a bench or floor, use lying marches or flutter kicks while bracing the core and maintaining a neutral spine. Always prioritize feeling the rectus abdominis contract rather than the hip flexors pulling the lumbar spine.
Frequently Asked Questions
What muscles does Lying Leg Raise Flat Bench work?
Lying leg raises primarily target the rectus abdominis and the hip flexors (iliopsoas). The transverse abdominis and obliques act as stabilizers; cue a posterior pelvic tilt to maximize lower-abs activation and reduce lumbar extension.
What is the best bodyweight alternative to Lying Leg Raise Flat Bench?
Reverse crunches are the best bodyweight alternative for reducing lumbar shear while keeping strong lower-abs activation—tuck the pelvis and curl the hips off the bench. If you have a bar, hanging knee raises let you progress the lever and train hip flexion with controlled eccentrics.
Can I build muscle without doing Lying Leg Raise Flat Bench?
Yes. Use progressive overload via increased reps, slower eccentrics, added range, or external resistance like ankle weights. Focus on technique cues—posterior pelvic tilt and deliberate contraction—to load the rectus abdominis rather than relying on hip flexor momentum.
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