Question: ab exercises you can do at work?
Answer: 1 / 5. Seated Toe-Taps. Sit up tall in your chair and lift one foot off the floor. ... 
2 / 5. Seated Reverse Jack Knives. Sit on the edge of your chair, then lean your torso back whilst extending legs out in front of you. ... 
3 / 5. Seated Crunch. ... 
4 / 5. Seated Bicycle Crunches. ... 
5 / 5. Chair Supported Plank Hold.