Crunch (on stability ball, arms straight)

Description

How to Do Crunch (on stability ball, arms straight)

1. 1
   Setup

   Sit on the stability ball, then roll forward until your lower back is supported by the ball and your feet are flat on the floor, hip-width apart, knees bent at 90 degrees.

2. 2
   Setup

   Ensure the ball is stable and your hips are slightly lower than your knees, creating a slight stretch in your abs; extend your arms straight overhead, perpendicular to the floor.

3. 3

   Exhale as you engage your core, slowly curling your upper body off the ball, bringing your ribs towards your hips while keeping your arms straight and pointing towards the ceiling.

4. 4

   Continue to lift until your shoulder blades are off the ball, focusing on contracting your abdominal muscles without pulling on your neck.

5. 5

   Inhale as you slowly and with control reverse the motion, lowering your upper body back down to the starting position, allowing your abs to stretch over the ball.

Tips

• Maintain a neutral neck position by imagining an apple between your chin and chest; avoid tucking your chin or straining your neck.
• Control the eccentric phase: Slowly lower yourself back over the ball to maximize muscle engagement and promote greater abdominal stretch.
• Actively squeeze your glutes and press your feet into the floor to enhance stability and prevent the ball from rolling during the movement.
• Focus on initiating the movement from your abs, thinking about "ribs to hips" rather than just lifting your head, to ensure proper muscle activation.

Common Mistakes

• ×Arching the lower back excessively causes strain and reduces abdominal engagement; keep your core braced and maintain a slight posterior pelvic tilt throughout the movement.
• ×Using momentum to crunch up diminishes muscle work; perform each repetition slowly and with control, focusing on a deliberate contraction of your abdominal muscles.
• ×Pulling on the neck with your arms or hands strains the cervical spine; keep your arms straight overhead and initiate the movement solely from your abdominal muscles.