1: Plank variations engage core muscles for a stronger midsection.

2: Crunches target abdominal muscles for a toned stomach.

3: Russian twists challenge obliques for a defined waistline.

4: Leg raises activate lower abs for a flatter belly.

5: Mountain climbers work entire core for improved stability.

6: Bicycle crunches engage obliques and lower abs.

7: Dead bug exercise strengthens core muscles for better posture.

8: Superman pose tones back and core muscles for a stronger body.

9: Glute bridges engage core for a firmer midsection.