3/4 Sit-Up
The 3/4 Sit-Up targets the Abdominals and suits beginner-level lifters. With 5 distinct steps, proper form is straightforward to learn and execute.
Starting position
Ending position
Muscles Worked
The abdominals handles the primary load during this movement. This compound movement keeps tension concentrated on a single muscle group.
How to 3/4 Sit-Up
- 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.
Common Mistakes
- • Brace your core before initiating the movement — maintain tension throughout the entire range of motion.
- • Control the eccentric (lowering) phase for at least 2 seconds to maximize muscle fiber recruitment.
- • If reps become too easy, slow the tempo or add a pause at the hardest point rather than rushing through more reps.
- • Squeeze at peak contraction for a full second — this is where most of the growth stimulus occurs.
Similar Exercises
Frequently Asked Questions
What muscles does the 3/4 Sit-Up work?
The 3/4 Sit-Up primarily targets the Abdominals. It's an effective compound exercise for building abdominals strength.
Is the 3/4 Sit-Up good for beginners?
Yes, the 3/4 Sit-Up is suitable for beginners. Start with light weight to master the 5-step form before adding load.
What equipment do I need for the 3/4 Sit-Up?
You need no equipment — just your bodyweight to perform the 3/4 Sit-Up. This makes it ideal for home workouts.
Track Your Progress
RepStack logs every set, calculates your e1RM, and coaches progressive overload — automatically.