stability ball crunch (full range hands behind head)

Instructions

1. 1

   Étape 1: Sit on the stability ball with your feet flat on the ground and your knees bent at a 90-degree angle.

2. 2

   Étape 2: Place your hands behind your head with your elbows pointing outwards.

3. 3

   Étape 3: Engaging your abs, slowly curl your upper body forward, bringing your chest towards your knees.

4. 4

   Étape 4: Pause for a moment at the top, then slowly lower your upper body back to the starting position.

5. 5

   Étape 5: Repeat for the desired number of repetitions.