3/4 sit-up

The 3/4 sit-up is a bodyweight exercise focused on the muscles of the core. It is similar to a sit-up, but stops short of the top position. This keeps constant tension on the abs, making it more difficult than traditional sit-ups. It can be performed for time or for reps, with the feet anchored or free, as part of the ab-focused portion of any workout.


  1. Activates and strengthens the abs, in particular the rectus abdominis or “six-pack” muscles
  2. Strengthens the hip flexors in addition to abs
  3. Simple way to progress sit-ups when they become easy to do for high reps

3/4 sit-up Images


3/4 sit-up Instructions

3/4 sit-up muscle diagram
  1. Lie down on the floor and secure your feet. Your legs should be bent at the knees.
  2. Place your hands behind or to the side of your head. You will begin with your back on the ground. This will be your starting position.
  3. Flex your hips and spine to raise your torso toward your knees.
  4. At the top of the contraction your torso should be perpendicular to the ground. Reverse the motion, going only ¾ of the way down.
  5. Repeat for the recommended amount of repetitions.