[Leg raises and abdominal curls] mainly exercise abdominal muscles.
Lie on your back on a mat, raise and control your legs, draw your arms forward to keep your shoulder blades away from the ground as much as possible, retract your chin slightly, pull your arms when you exhale, slowly lower your back when you inhale, and keep your legs steady. Move, repeat.
Do four sets of 15-20 times each next day, resting for one minute between sets.
