“This results in quickness of mind, liberation from the sense organs, and mastery (jaya) over matter” - Patanjali’s Yoga Sutra 3.48
The word Sarvangasana comes from Sanskrit and can be broken into three parts: sarv meaning all, anga meaning body part and asana meaning pose; it translates to all limbs pose but is called the shoulder stand pose.
It’s commonly classified as an inversion - yoga poses that invert your body or turn it upside down, with your feet up and head low. This changes how the gravitational force affects the body internally for the duration of the asana. It encourages blood flow to the brain and has mental health benefits along with physical ones.
Sarvangasana can be a gateway to more complex inversions. It is done by raising your legs up in the air and supporting your body with your shoulders, neck and head.