Blink your eyes rapidly several times. With eyes open, move your eyes up and down and then side to side. Move your eyes clockwise and then anti-clockwise in a circle Stretch your arm in front of you. Curl all the fingers but the index finger. Gaze at the tip of the index finger as you bring the finger close to the tip of the nose and then back. Close your eyes tightly and then release. Rub your palms to generate warmth and place them lightly over your eyes.