This is a great stretch to do at your desk while working or studying to release some of the neck tension some of us can feel after being in front of the computer for a bit too long.
Start by sitting straight in your chair with your feet flat on the floor. Extend you right arm along the side of the chair. Place your left hand on top of your head and slowly tilt head to the left. Apply gentle pressure for more of a stretch. Hold for 30 seconds then swap sides.