Why is it so beneficial to practice headstand (Shirshasana)? Why do we need to turn our world upside down once in a while?

First of all I have to mention that, even if it’s called headstand, the weight in this Asana shouldn’t be on the head. This Asana should be learnt in a proper way. It’s not as easy as putting the head down and legs up. The weight of the body should be on the arms, and in the end you should be able to hold this Asana for 3 hours. First you start with maybe one minute and increase it over time, slowly though.

Shirshasana has a lot of benefits, here are just some of them:
increases the power of memory
destroys eye deseases and improves long-sightedness
purifies the sense organs
increases intellectual power
creates peace of mind
alleviates fatigue of the body

There’s a lot more to say about this Asana, very important as well:
Don’t practice Shirshasana immediately after getting up in the morning without doing sun salutations and the other Asanas, it shouldn’t be the first thing to practice in the morning, and don’t do other Asanas afterwards except Padmasana, Yoga Mudra and Uthplutih because that could cause harm.
An experienced teacher can show you how to go into and out of that posture safely and also how to create the strenght to hold it for a longer time safely.

Try to turn your world upside down and see it from a different point of few!!!