"Hala" means "Plough" in Sanskrit. This posture is called 'Halasana' because in the final position the body resembles the Indian plough.Padahastasana - Hand-to-Feet Pose
"Pada" means "foot" and "Hasta" means "hand" in Sanskrit. You have to catch your big toes with your hands in this posture.Paschimotanasana - Posterior Stretch
"Paschima" means 'behind', 'back' or 'posterior' and 'Uttana' means to stretch out in Sanskrit. "Paschimotana" means stretching the posterior regions of the body.Sarvangasana - All-Parts Pose
"Shalabha" means "locust" in Sanskrit. The final position of this asana resembles a locust when it lowers its head to eat and raises its tail. Hence, the name.Trikonasana - Triangle Pose
"Tri" means "three", "Kona" means "angle", and "Trikona" means "triangle" in Sanskrit The straight legs with the floor between the feet resemble the three sides of a triangle in this asana. Hence the name.