Sit on the stability ball with your feet flat on the ground and your knees bent at a 90-degree angle.
Place your hands behind your head with your elbows pointing outwards.
Engaging your abs, slowly curl your upper body forward, bringing your chest towards your knees.
Pause for a moment at the top, then slowly lower your upper body back to the starting position.
Repeat for the desired number of repetitions.
Activation
Abs
PrimarySets
3–5
Reps
8–12
Rest
60s