L Sit Ups
L sit ups are a bodyweight abdominal exercise that involves simultaneously lifting the torso and straight legs to meet in the middle. This challenging movement maximizes rectus abdominis contraction and hip flexor strength.
How to do it
- Lie flat on your back with legs straight and arms extended overhead.
- Simultaneously raise both straight legs and your torso toward each other.
- Reach your hands toward your feet at the top, forming an L or V shape.
- Hold the peak position for a moment, then slowly lower both your legs and torso.
- Repeat for the desired number of repetitions.
Form cues
- Keep your lower back pressed firmly into the floor.
- Move your legs and torso simultaneously.
- Reach your hands past your shins at the top.
- Lower down with control rather than dropping.
Breathing: Exhale as you lift your torso and legs together, and inhale as you lower back down with control.
Common mistakes
- Using momentum by swinging arms, which reduces core activation.
- Arching the lower back off the floor, which can cause strain.
- Bending the knees deeply to make the movement easier, changing the exercise.
Muscles worked
Primary: abs. Secondary: hip flexors, quads, obliques.
Suggested sets & reps
Get fitter
3 sets x 10 reps, rest 60 seconds
Lose weight
3 sets x 10-15 reps, rest 45 seconds
Build muscle
3-4 sets x 8-12 reps, rest 60-90 seconds
Easier, harder & alternatives
Take care if…
- If you feel sharp lower back pain, stop immediately and choose a gentler option.
General educational guidance, not medical advice. Stop on sharp pain and check with a qualified professional if unsure.
Get this in your plan
Create a free account for an AI-built plan that puts moves like this into your week.
Start free →Frequently asked questions
What if I feel this in my hip flexors instead of my abs?
It is normal for hip flexors to assist since they lift the legs. Focus on curling your upper spine forward to emphasize your abs.
How often can I do L sit ups?
2 to 3 times per week is plenty for recovery and strength building, allowing your core a day of rest between sessions.
Can I do these on a hard floor?
A yoga mat or soft carpet is recommended to protect your tailbone and lower back from friction and pressure.