5 Exercises You Can Do in a Chair That Will Give You a Flat Belly

5. Knee to Elbow Lift

Sit on the chair. Keep your back straight without touching the chair. Place your hands behind your head. Lift your right knee towards your chest. Bend the left elbow towards the knee. Return to the starting position. Do 15 repetitions. Change the knee and elbow and do 15 repetitions.