Flexion Leg Sit-Up
Strengthen your core with Flexion Leg Sit-Ups! This exercise targets your abs for a stronger, more defined midsection. Try it today!
The Flexion Leg Sit-Up is a compound exercise that mainly works the core, with help from the glutes & hips. No equipment needed: it uses just your bodyweight.

Optional Equipment

Flexion Leg Sit-Up Muscles Worked
Primary
Abdominals (rectus abdominis); Obliques
Secondary
Deep Core (transverse abdominis); Long Thigh (sartorius)
Flexion Leg Sit-Up Variations and Alternatives
How to do the Flexion Leg Sit-Up
Starting Position:
Lie flat on your back on the mat.
Extend your arms straight above your head, keeping them in line with your body.
Bend your knees, bringing your feet flat on the ground, hip-width apart.
Engagement:
Engage your core muscles by tightening your abdominal area.
Keep your chin tucked slightly to avoid straining your neck.
Movement:
As you exhale, lift your upper body off the ground by curling your torso towards your thighs.
At the same time, extend your legs straight out in front of you, keeping them elevated off the ground at an angle.
Your arms should raise straight towards your feet as you come up.
Top Position:
Pause at the top of the movement, with your body in a “V” shape, feeling the contraction in your abs.
Hold this position for a moment to maximize engagement.
Return:
Slowly lower your upper body back to the starting position, while simultaneously bringing your legs back down.
Maintain control throughout the movement to prevent bouncing or sudden motions.
Repetitions:
Aim for 10-15 repetitions, depending on your fitness level.
Rest briefly between sets as needed.
Tips:
Focus on using your abdominals to lift your upper body rather than pulling with your neck or arms.
If you find it too challenging, you can perform the movement with your feet on the ground until you build more core strength.
Keep breathing steadily throughout the exercise.
Flexion Leg Sit-Up FAQs
What muscles does the Flexion Leg Sit-Up work?
The Flexion Leg Sit-Up mainly works the core, with help from the glutes & hips. The main muscles are the rectus abdominis and obliques.
What equipment do you need for the Flexion Leg Sit-Up?
None. The Flexion Leg Sit-Up is a bodyweight exercise, so you can do it anywhere.
Is the Flexion Leg Sit-Up a compound exercise?
Yes. It's a compound movement, meaning it trains several muscle groups at once rather than isolating one.
What are some Flexion Leg Sit-Up variations and alternatives?
Similar exercises include the Three-Quarter Sit-Up, Ab Mat Sit-Up, Arms-Up Full Sit-Up and Assisted Sit-Up.
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