1: "Chair Marches - Engage core muscles while sitting for an effective ab workout."

2: "Seated Leg Lifts - Target lower abs with this easy chair exercise."

3: "Chair Twists - Work obliques while seated with this simple move."

4: "Seated Knee Tucks - Strengthen abs by bringing knees towards chest in chair."

5: "Leg Extensions - Tone and sculpt abs with this seated exercise."

6: "Seated Side Crunches - Work obliques and core sitting down."

7: "Chair Planks - Strengthen entire core with this seated plank variation."

8: "Seated Russian Twists - Sculpt abs and improve core stability in the chair."

9: "Chair Sit-ups - Achieve a strong core with seated sit-ups in the office."