Crunch (on bosu ball)

Description

How to do Crunch (on bosu ball)

1. 01
   Setup

   Position the Bosu ball flat-side down on the floor. Sit on the dome with your lower back supported, and place your feet flat on the floor, hip-width apart.

2. 02
   Setup

   Lean back until your mid-back is centered on the dome, allowing your spine to extend slightly over the ball. Place your hands lightly behind your head, keeping your elbows wide.

3. 03

   Exhale as you contract your rectus abdominis, curling your upper body forward until your shoulder blades lift off the Bosu ball. Focus on drawing your ribs towards your hips.

4. 04

   Hold the contraction briefly at the peak, ensuring a strong abdominal squeeze. Slowly inhale as you control the movement, returning to the starting position with your back extending gently over the ball.

5. 05

   Maintain constant tension in your core throughout the movement by avoiding full relaxation at the bottom. This keeps the muscles engaged and maximizes effectiveness.

Tips

• Maintain a stable lower body by keeping your feet firmly planted and avoiding using momentum from your legs to lift your torso.
• Focus on controlled movement, performing each crunch slowly and deliberately, emphasizing the contraction and extension rather than speed.
• Breathe effectively by exhaling forcefully on the concentric (lifting) phase and inhaling deeply on the eccentric (lowering) phase to support core engagement.
• Engage your glutes by lightly squeezing them, which can help stabilize your pelvis and prevent your hips from rocking during the movement.

Common mistakes

• Pulling on the neck with your hands compromises cervical spine safety; instead, keep your gaze directed towards the ceiling and let your abs do the work.
• Rushing the movement with momentum reduces muscle activation; control the movement through the full range of motion to maximize abdominal engagement.
• Lifting too high by crushing your chest towards your knees reduces tension on the abs; focus on lifting only until your shoulder blades are off the ball for optimal rectus abdominis activation.