ab workouts that you can do at your desk?
['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.']