Vakrasana - Twisted Pose
"Vakra" means "twisted". This asana is designed to twist the spine to the right and left side in from its erect position.
Veerasana - Warrior Pose
"Veera" in Sanskrit means "brave". The way a brave man takes his position while attacking his enemy, the similar position is formed in this asana. Hence it is called as "Veerasana", the pose of a Warrior.
Viparita Karani - Inverted Pose
"Viparita" means "inverted" and "Karani" means "action" in Sanskrit. The usual posture of the body is inverted in this practice.
Vrikshasana - Tree Pose
"Vriksha" means "tree" in Sanskrit. In the final position of this asana, you have to stand still like a tree.