It is possible through training to improve the skills of community, understanding of people, this is achieved by methods - special psychology. You can find out how and how they live by the signs of people, their behavior, conversation, folds in their arms, legs.
By studying Zen practice - you can learn to hear, see, perceive the world better by 30-40-60 percent more than an ordinary person.
Studying Chan Buddhism, breathing exercises, gypsies, wushu, martial arts, aikido, karate, find out how much stronger a person can become, not only in terms of muscles, but also mental strength.
By studying the integral yoga and methods of Cardos Castaneda, you can learn to control the subconscious.
But a person cannot fly on a sword. He will not be able to consume energy from jade.
By studying Tibetan, Persian, Indian folk medicine, you can find out how various medicinal plants, roots, fruits, berries, and cooked foods affect a person. How their interaction changes properties sometimes they become poison and sometimes medicine.
By studying acupuncture, you can better understand how certain points of a person work, in singing nerve endings to activate certain zones.
That is, from the point of view of cultivation, increasing human capabilities, expanding them like muscles, the ability to use fist fighting techniques, have a strong will, a strong spirit, be able to understand people, and manipulate them. Yes it is possible. What an example, Kipling’s novel "Kim", the actions of special services, ascetics of the monks in India and China.
But from the point of view of cultivation, we have some kind of superpower, this is not possible. The cultivator will not be able to live 500 years, will not be able to fly, will not be able to extract power from stones, etc.