Sirsasana or the Headstand is the king of all yoga poses. It requires complete inversion of your body and good upper body strength.Sirsasana instantly calms your body. It stimulates the pituitary gland, strengthens the lungs, improves digestion, and cures asthma. It makes the arms and legs stronger and tones the abdominal organs
Vrikshasana calms and relaxes the central nervous system and stretches the entire body. It strengthens the legs and opens the hips and improves your neuromuscular coordination and endurance. It may thus be helpful for those who suffer from sciatica (nerve pain in the leg).
Hasta padasana has many spiritual benefits. As it reunites the front and back of the body, it awakens and synchronizes the breath and the mind. Every aspect of the practitioner's being is engaged and the result is a deep sense of awareness and spiritual equilibrium.