1: Planks engage core muscles for a strong midsection.

2: Crunches target abdominal muscles for a flat stomach.

3: Squats strengthen lower body and core muscles.

4: Deadlifts work multiple muscle groups for a toned physique.

5: Russian twists target obliques to trim waistline.

6: Leg raises engage lower abs and increase core strength.

7: Lunges build leg strength and improve balance.

8: Mountain climbers torch calories and strengthen core.

9: Bicycle crunches work entire core for a sculpted midsection.