Appears in642 Workouts*

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.

Flexion Leg Sit-Up demo video 2
Ms. Grey
JustGains_XX
@JustGains_XX

Optional Equipment

Yoga Mat
Yoga Mat

Flexion Leg Sit-Up Muscles Worked

Primary

Abdominals (rectus abdominis); Obliques

Secondary

Deep Core (transverse abdominis); Long Thigh (sartorius)

How to do the Flexion Leg Sit-Up

  1. 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.

  2. Engagement:

    • Engage your core muscles by tightening your abdominal area.

    • Keep your chin tucked slightly to avoid straining your neck.

  3. 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.

  4. 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.

  5. 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.

  6. 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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