1: Plank exercises engage core muscles for a strong midsection.

2: Russian twists target obliques for a toned waist.

3: Bicycle crunches work multiple ab muscles simultaneously.

4: Leg raises strengthen lower abs for a defined stomach.

5: Mountain climbers boost heart rate while sculpting abs.

6: Side planks challenge core stability for a slender waist.

7: Flutter kicks tighten lower abs with fast-paced movements.

8: Dead bug exercise improves coordination and promotes ab strength.

9: V-sits engage entire core for a flat and toned stomach.