Many of yoga asana require that the body’s weight be bared on the hands. Hasta Bandha is a cupping action and a livening that is applied to the hands when they are connected to the earth. Activating the bandhas of the hands gives support to the wrists and helps to protect them from injury in postures where the wrists bear weight.
To engage the Hasta Bandhas spread the fingers wide while being careful not to over stretch the thumb away from the hand. Distribute your weight evenly through all parts of the hand and then contract the muscles of the palm to lift the palm upwards away from the floor. This will create a suction-cup action of the hands that will add support to the wrists and allow you to balance on your hands with energy and strength. Find this in table and then shift to down dog, plank, and chattaranga. When you feel ready, apply hasta bandha to crow, handstand and other arm balancing poses.
When the hands are away from the floor as in warrior two, continue to feel the doming action of the palm while finding a soft equal spread on both the top and bottom of the hand. Feel as though the energy in the arm is flowing in two directions, both from the hand to the heart as well as the heart to the hand. Balance these two directions.