Exercise guide
Seated Single Leg Raise
- Beginner
- Compound
- Rep-based
- Lower legs
- Waist
The Seated Single Leg Raise is a beginner-friendly isolation exercise that strengthens the hip flexors and quadriceps while engaging the lower abdominals for stability. It is particularly effective for improving knee health and core control through a controlled, unilateral range of motion.
Reviewed by the Crucible team · Updated June 2026
Muscles worked
Setup
- Sit tall on the edge of a flat bench with your feet flat on the floor, hip-width apart.
- Grip the sides of the bench just behind your hips to stabilize your torso.
- Extend your target leg straight out in front of you with your heel lightly touching the floor.
- Engage your core and maintain a neutral spine with a very slight lean back for balance.
How to do it
- Exhale and lift your straightened leg upward toward the ceiling, keeping the knee fully locked.
- Raise the leg until it is at least parallel to the floor, or as high as your hip mobility allows without rounding your back.
- Inhale as you slowly lower the leg back to the starting position using a 2-second controlled tempo.
- Perform all repetitions on one side before switching to the opposite leg.
Form checklist
- Keep the working knee completely straight throughout the entire set.
- Maintain an upright chest and avoid slouching or rounding the lower back.
- Ensure the stationary foot remains firmly planted on the ground for stability.
- Avoid using momentum or 'swinging' the leg; keep the movement slow and deliberate.
Pro tips
- Flex your toes toward your shin (dorsiflexion) to increase tension throughout the anterior chain.
- Focus on a hard squeeze of the quadriceps at the top of the movement to maximize muscle fiber recruitment.
- Imagine pulling your thigh bone into your hip socket to better engage the deep hip flexors and lower abs.
Make it harder
- Add ankle weights to increase the resistance on the quadriceps and hip flexors.
- Perform a 3-second isometric hold at the peak of the contraction on every rep.
Frequently asked
- What muscles does the seated single leg raise work?
- The seated single leg raise primarily targets the abs and quadriceps, and also works the glutes and hip flexors as secondary muscles.
- What equipment do you need for the seated single leg raise?
- The seated single leg raise requires no equipment — just your body weight.
- Is the seated single leg raise good for beginners?
- Yes. The seated single leg raise is a beginner-friendly movement and a strong foundation to build on.