Two movements to exercise the lower abdominal muscles
1. Sitting with your knees bent and abdomen tightened (picture above): Sit at one end of the bench, lean back slightly, contract your abdomen and lift your feet.
2. Supine leg raise on inclined board (picture below): Lie on an inclined board or sit-up inclined board, grab the horizontal bar with both hands, contract your abdomen and lift your legs up.
Both movements exercise the lower abdominal muscles, which can help you develop the mermaid line. Each action is performed 15 times per group, and 3-4 groups are performed. Use sit-ups to exercise your upper abdominal muscles.
