According to the chapter, what is stated about "During meditation all" in Meditation And Yogic Practices?
Shirshasana Shirsha, a Sanskrit word means 'head'.
In this posture one stands on one's head, hence it is called Shirshasana (Head Stand Posture).
During meditation, all kinds of thoughts which are causing stress are eliminated.
Hamsasana Hamsa, a Sanskrit word, means 'swan'.