Great epic Ramayana of India gives us an idea of how Hanuman exhibited his supernatural powers. He was a Brahamachari (celibate) with self-control, a strong man with unlimited powers, an unmatched scholar and a great devotee of Lord Sriramchandra. Even to this day, people in India chant the Hanuman chalisa everyday to get rid of the evil. Daily chant of this mantra helps them overcome all sorts of trouble they face in life. Hanuman was granted the boon to stay alive on earth as long as Lord Ram’s name was chanted. He is a chiranjeevi(immortal) as well as Brahmachari. He got the divine knowledge of vedas and the shastras from Sun god himself. He appears in places where Ramayan discourses are offered to the community.
Siddhi and Sadhanas :
Siddhis are the gained Supernatural powers, Sadhana is the path of attaining of the siddhi which a Sadhak (Person who wants to gain powers) involves in his routine life.
Hanuman had almost all the Supernatural powers or Siddhis. He is a Chiranjeevi(man who has no death), according to indian epics Ramayan and Mahabharatha. He is still existing but unseen by the people of modern world.