What are some effective lying on back yoga poses for relaxation and stretching?

Some effective lying on back yoga poses for relaxation and stretching include Savasana (Corpse Pose), Supta Baddha Konasana (Reclining Bound Angle Pose), and Supta Padangusthasana (Reclining Hand-to-Big-Toe Pose). These poses help release tension in the body, calm the mind, and improve flexibility.