Sit up straight in a chair.
Ensure you have good posture with your weight through your seat bones, your shoulder blades relaxed back and your gaze ahead.
Place your hand on your stomach. You may find it helpful to fold a towel against your stomach to press into.
Bring your elbow forward so that it is in line with your hand.
Keeping this alignment, gently press the heel of your hand into your tummy.
It is key that you do not allow your wrist to bend or your elbow to drop back.
Hold this position.