Rabbit pose stretches the spine very gently and slowly, vertebrae by vertebrae. It lengthens the spine, corrects its alignment, and improves the whole posture of the body. It stimulates the thyroid, compresses the throat, and improves hormone imbalances by stimulating the endocrine system.
Practicing rabbit pose also helps with digestion and can treat depression and insomnia. It's a counter pose to the back-bending camel pose (ustrasana), and is closely related to child's pose (balasana).
This is a good pose for beginners, but a folded blanket can be placed under the knees or head in order to protect them from extraneous pressure, if necessary. More advanced practitioners may deepen the pose by reaching the hands toward the sky instead of keeping them on the heels.