Place your forearms are on the pads of the leg raise machine and grip the handles or bars. Your arms should be bent at 90 degrees and your upper arms in line with your torso. Your torso should be straight and your lower back pressed against the pad of the bench if using one. Keep your legs extended. This is the start position. Proceed to bring your knees up towards your chest. Exhale as you do so. Don’t swing your body to use momentum. Use your abdominals to pull your knees toward your chest. Return to the starting position, lowering your legs slowly towards the floor. Inhale as you do so. Repeat.