Strengthening the spine and cervical regions through exercise is one of the best ways to grow taller and the Fish exercise from yoga does just that. Lie down on the floor and follow this procedure: Lie on your back, arms by the sides. Stretch your arms and raise them over your head and place them straight on the other side. Now press firmly on the back of your hands and your heels and lift your body – buttocks, back, shoulders - in the air as much as you can. Hold the position for a little while and let go. Repeat 2-3 times.