Balancing on the left foot, raise both arms over the head keeping the elbows unbent and joining the palms together. Hold the posture while breathing gently through the nostrils for about 10 complete breaths. Lower the arms and right leg and return to the tad-asana, standing position with feet together and arms at the sides. Pause for a few moments and repeat on the opposite leg. The challenge of the vriksha-asana is maintaining balance on one leg.
Poor balance is often the result of a restless mind or distracted attention.
Continue by imagining the head and outstretched arms as the branches and leaves of the tree. You may be unsteady for a while and find the body swaying back and forth, but don't break the concentration. Like a tree bending in the wind and yet remaining upright, the body can maintain balance. Aim to achieve the rootedness and firmness of a tree. Regular practice of the vriksha-asana improves concentration, balance and coordination.