[Traditional abdominal curls] mainly exercise the upper abdominal muscles.
Lie on your back on the floor with your lower back pressed against the ground.
Place your hands beside your head and open your arms. Place your legs flat on the ground and bend your knees.
Slightly draw your chin toward your chest, contract your abdominal muscles, exhale and lift your upper body without keeping your lower back off the ground. Hold for 2 seconds, and then slowly return to the starting position.
Do 4 groups of 20 times every other day.
