3/4 Sit-Up — start position
Start
3/4 Sit-Up — end position
End

Core / Beginner / Compound (multi-joint)

3/4 Sit-Up

A bodyweight exercise for the abs.

At a glance

Primary
Abs
Equipment
Bodyweight
Movement pattern
Trunk flexion
Level
Beginner
Type
Core, Compound (multi-joint)

Loads the lower back. Use a load you can control and skip it if it causes pain.

How to do it

  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.

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Muscles worked

Neck (Front)Upper traps (Front)Front delts (Front)Side delts (Front)Chest (Front)Serratus anterior (Front)Biceps (Front)Forearms & grip (Front)Abs — primary (Front)Obliques (Front)Hip flexors (Front)Quads (Front)Adductors (Front)Shins (tibialis) (Front)Calves (Front)Outer shins (peroneals) (Front)Feet (arch & toes) (Front)Neck (Back)Upper traps (Back)Upper back (rhomboids, mid/lower traps) (Back)Rear delts (Back)Side delts (Back)Rotator cuff (Back)Lats (Back)Lower back (erectors) (Back)Triceps (Back)Forearms & grip (Back)Hip abductors (glute med) (Back)Glutes (Back)Hamstrings (Back)Adductors (Back)Calves (Back)
FrontBack
  • Primary: Abs

Best for

How specific this exercise is to each movement.

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Photos and instructions: free-exercise-db (github.com/yuhonas/free-exercise-db), public domain.