Vatayanasana

Vatayanasana is an intermediate yoga pose that requires a great deal of flexibility and is part of the intermediate series of Ashtanga yoga. The name is derived from the Sanskrit vataya, meaning "horse," and asana, meaning "pose."

BENEFITS

This is a good bone strengthening exercise where experts even say that minor deformities in the hip or lower limbs can be cured with this posture. Apart from the deformities, you can use this exercise to strengthen your lower body bones, making them more flexible.
The same applies for the muscles, the muscles all around the body that would now tangle themselves untying the tension knots that would hold them back from flexibility. This is why the initial stages may come with some muscle pain but with proper practice it would ease.
This yoga is mainly known for its proper blood circulation which is done throughout the body as you opt for this yoga. The twists and the stretches are simply a facilitator.
If you are suffering from arthritis, this pose will help in educing the stiffness and pain associated with it.
It has proven to be helpful in cases of inguinal and femoral hernia.