
3/4 sit-up
AbsBody weight

Step 1: Stand with your feet shoulder-width apart and hold the sledge hammer with both hands.
Step 2: Engage your core and keep your back straight.
Step 3: Swing the sledge hammer down towards the ground, using your core and upper body strength.
Step 4: As you swing down, pivot your hips and transfer the force to the hammer.
Step 5: Repeat for the desired number of repetitions.