Quarter Sit-up
Engage your upper abs with the Quarter Sit-up, a focused bodyweight exercise. Lift your head and shoulders slightly for core strength and definition.
Description
A Quarter Sit-up is an abdominal exercise that focuses on the upper abs, performed by repeatedly lifting the upper body slightly off the floor by contracting the abs.
How to Do Quarter Sit-up
- 1Setup
Lie supine on the floor with your knees bent at a 90-degree angle and feet flat, hip-width apart. Place your fingertips lightly behind your head with elbows wide, or cross your arms over your chest.
- 2Setup
Engage your core by drawing your navel towards your spine, pressing your lower back firmly into the floor to create a stable base for the movement.
- 3
Exhale as you slowly lift only your head and shoulders a few inches off the floor, initiating the movement by contracting your rectus abdominis while keeping your lower back pressed down.
- 4
Hold the peak contraction briefly, feeling the squeeze in your upper abs, then slowly and with control, inhale as you lower your head and shoulders back to the starting position.
Tips
- Focus on initiating the movement with your abdominal muscles, not by pulling on your neck or using momentum from your arms.
- Maintain a consistent space between your chin and chest throughout the movement, as if holding an orange, to prevent neck strain.
- Breathe out as you lift (concentric phase) and in as you lower (eccentric phase) to help engage your core effectively and manage intra-abdominal pressure.
- Perform the movement slowly and deliberately, emphasizing the contraction and controlled release, rather than rushing through repetitions.
Common Mistakes
- ×Pulling on your neck strains the cervical spine; instead, keep your neck neutral and let your abs do the work, using your hands only for light support.
- ×Lifting too high turns it into a full sit-up, reducing the specific upper ab focus; only lift until your shoulder blades are just off the floor.
- ×Using momentum to lift reduces muscle engagement; control the movement through both the ascent and descent, focusing on a continuous abdominal contraction.
Variations

Assisted Sit-Up
Perform assisted sit-ups to build core strength with support. This effective exercise targets your rectus abdominis, enhancing stability and definition.

3/4 Sit-up
Engage your core with the 3/4 sit-up, a targeted abdominal exercise. Lift your torso partially to maintain constant tension and build strength.

Vertical Sit-Up
Perform the vertical sit-up to strengthen your rectus abdominis and hip flexors. Lie on your back, lift legs vertically, then crunch your torso towards

Half Sit-up
A half sit-up targets the rectus abdominis and iliopsoas, strengthening your core. Learn proper form to enhance abdominal definition and stability.
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Curl-up
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