Marcus Vitruvius Pollio: The secret behind the Vitruvian man?

The drawing, which is in ink on paper, depicts a man in two superimposed positions with his arms and legs apart and inscribed in a circle and square And it describes the human body.
But do you believe that this Renaissance genius who has always hidden a secret in his works, Hasn't kept a secret for us in such as important work?
In this video, we will first look at the main subject of the painting and then we will reveal the hidden secrets in this drawing to you.

Sources:
https://www.mcsweeneys.net/articles/t...
https://www.archyde.com/does-leonardo...
https://www.fastcompany.com/1669108/m...
https://www.livescience.com/18183-leo...
https://www.bl.uk/learning/cult/bodie...
https://www.amazon.com/Mystery-Vitruv...
https://books.google.dk/books?id=l5lT...
https://mymodernmet.com/leonardo-da-v...
https://en.wikisource.org/wiki/Ten_Bo...