How are Indian Yogis able to perform mystical things ?

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Sadhguru on joe rogan said he experienced extra teresstial beings in kailash mansarovar . Not only this he is able to perform a lot of things .  

We require psychedelics to enlighten but indian yogis for thousands of years with the help of certain yogic practices are gaining sidhis and performing what we might call magic . How are they doing this ?