Flexion Leg Sit up (bent knee)

Flexion Leg Sit up (bent knee)

The Flexion Leg Sit Up (bent knee) is a challenging exercise that targets your abdominal muscles, especially the rectus abdominis. It is an effective way to increase core strength and stability while also engaging your hip flexors. To perform this exercise, start by lying on your back with your knees bent and feet flat on the floor. Place your hands behind your head or across your chest, whichever is more comfortable for you. Engaging your core, lift your upper body off the ground, curling your torso towards your thighs while keeping your lower back pressed into the floor. As you reach the peak of the movement, pause for a moment, then slowly lower your upper body back down to the starting position. The Flexion Leg Sit Up (bent knee) provides a dynamic range of motion that activates multiple muscle groups simultaneously. It is crucial to maintain proper form to avoid strain or injury. Keeping your lower back firmly on the floor and engaging your core throughout the movement will ensure maximum effectiveness and safety. Incorporating this exercise into your workout routine can help strengthen your abs, improve your posture, and enhance overall core stability. Remember to start with a weight and intensity level that suits your fitness level and gradually increase the difficulty as your strength improves.


  • Lie flat on your back on a mat or the floor with your knees bent and feet flat on the ground.
  • Place your hands behind your head, interlocking your fingers.
  • Engage your core muscles by drawing your belly button in towards your spine.
  • Slowly lift your head, neck, and shoulders off the mat, while simultaneously bringing your knees towards your chest.
  • Exhale as you perform this movement, focusing on contracting your abdominal muscles.
  • Pause briefly at the top of the movement, ensuring your shoulder blades are off the ground.
  • Slowly lower your upper body and legs back down to the starting position, inhaling as you do so.
  • Repeat for the desired number of repetitions.

Tips & Tricks

  • Start with proper warm-up exercises to activate your core muscles.
  • Focus on maintaining a neutral spine throughout the movement to prevent excessive strain on the lower back.
  • Engage your abs by exhaling as you lift your upper body off the ground.
  • Control the movement by using a slow and controlled tempo, rather than relying on momentum.
  • Gradually increase the difficulty by incorporating a medicine ball or dumbbell into the exercise.
  • Include variations such as single-leg flexion sit-ups to target different muscles in your core.
  • Ensure you have a stable surface to perform the exercise on to prevent any slips or falls.
  • Incorporate the flexion leg sit-up into a well-rounded workout routine that includes exercises for all major muscle groups.
  • Stay consistent with your workouts and gradually increase the number of repetitions and sets to progress over time.
  • Maintain proper nutrition and hydration to fuel your body and aid in muscle recovery.


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