Ki,chi,energy,...the force.they all mean and standfor the same thing,
most of you are familiar with the term 'ki', do to anime and japanese culture.
Thought other's also know it as chi, the chinese term, but none the
less both mean the same thing; "internal energy (or just energy)".
ki is within everyone and everything,it's what binds us together
and makes up the universe.
Ki is what in anime is used to create those huge energy blast and bukujuitsu(the art of flying)and many of the awsome attacks and abilities you see them do.The reason why this is in anime is because it's part of the asian culture and religious background,and yes you to can achieve the same energy as those in anime(though it may not be to the same extent).