Sirsasana the king of all asanas and the reasons are not hard to find.
In forward bends, one uses the outer mind while in backbends the outer mind is silenced and the inner mind is made to work.
Hard work and humility are essential for spiritual sadhana.
Persistent practice alone is the key to yoga. As you take pains to learn, continue with devotion what you have learn.
There is no difference in souls, only the ideas about ourselves that we wear.
The practice of asanas purges the body of its impurities, bringing strength, firmness, calm, and clarity of mind.