While seated, lift your legs one at a time, holding them straight for a few seconds. Repeat this movement for a few minutes to engage your core.
Sit on the edge of your chair, lean back slightly, and lift your feet off the ground. Bring your knees towards your chest in a bicycle pedal motion to work your abs.
Find a wall and slide your back down it until your knees are at a 90-degree angle. Hold this position for as long as you can to target your lower body and core.
Place your hands on your desk, shoulder-width apart, and perform push-ups against the desk to engage your chest and arms.
Use your desk chair or a stable surface to perform dips, targeting your triceps and shoulders.
While standing at your desk, lift one leg straight to the side, keeping it parallel to the ground. Alternate legs to engage your hip and thigh muscles.
Sit up straight and hold an object with both hands, such as a water bottle or a book. Rotate your torso to the left and then to the right, engaging your obliques.
Place your forearms on your desk and extend your legs behind you, keeping your body in a straight line. Hold this plank position to strengthen your core.