Jack Split Crunches

Jack Split Crunches

Jack Split Crunches are a dynamic and challenging exercise that target the abdominal muscles, particularly the rectus abdominis or the "six-pack" muscles. This exercise is a variation of the traditional crunch, but with an added twist to engage the muscles even further. To perform Jack Split Crunches, start by lying flat on your back with your legs extended and arms by your sides. Lift both legs off the ground, keeping them straight and together. Simultaneously, raise your upper body off the ground, reaching your hands towards your feet. As you lift your upper body, aim to split your legs apart, opening them into a wide "V" shape. The key to this exercise is to contract your abdominal muscles and initiate the movement from your core. Exhale as you lift your upper body and aim to touch your toes, or get them as close as possible. Squeeze your abs at the top of the movement and then slowly lower your upper body and legs back to the starting position. Jack Split Crunches offer several benefits beyond working your abs. They also engage the hip flexors, which are crucial for core stability and overall lower body strength. This exercise challenges your balance and coordination while enhancing your overall core strength and sculpting your midsection. Incorporating Jack Split Crunches into your workout routine can help you build a strong and stable core, improve your posture, and even enhance your athletic performance. Remember to always maintain proper form and start with a weight and intensity level that is suitable for your fitness level. So, get ready to add a twist to your core workout with Jack Split Crunches!


  • Lie on your back with your knees bent and feet flat on the floor.
  • Place your hands behind your head with your elbows bent out to the sides.
  • Extend your right leg straight up toward the ceiling and lift your left leg a few inches off the floor.
  • As you exhale, curl your upper body off the floor, bringing your left elbow toward your right knee.
  • Simultaneously, extend your right leg out and diagonally to the left side, keeping it a few inches off the floor.
  • Pause briefly at the top, then slowly lower your upper body and right leg back to the starting position.
  • Repeat the movement, this time extending your left leg straight up and bringing your right elbow toward your left knee.
  • Perform the desired number of repetitions alternating sides.
  • Focus on engaging your core muscles and not pulling on your neck or head with your hands.
  • Breathe consistently throughout the movement, exhaling as you crunch up.

Tips & Tricks

  • Engage your core throughout the entire exercise.
  • Focus on contracting your abdominal muscles with each crunch.
  • Breathe out as you crunch up and inhale as you lower your legs.
  • Start with a manageable number of repetitions and gradually increase as you build strength.
  • Ensure proper form by keeping your lower back grounded on the floor.
  • Use controlled and slow movements to maximize muscle engagement.
  • Incorporate variations such as adding a twist or lifting heavier weights to challenge yourself.
  • Combine jack split crunches with other exercises to create a well-rounded core workout.
  • Fuel your body with a balanced diet that includes adequate protein for muscle recovery and growth.
  • Allow for rest days in between workouts to give your muscles time to repair and strengthen.


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