Did ninja really exist? They are often mentioned in manga, movies and novels. Ninja were often associated with Superhuman or supernatural powers. Did they really have superpowers? What was in reality?
There are a many portrayals of ninja which are totally different from each other. The art of ninja is not a sport or for entertainment, no is it a lifestyle. the ninja lived simply.. They fought with real swords,and they had an ability to operate in extreme situations.
For that sake, ninja did strict training and they had to be physically healthy for training. The art of the ninja was not intended to be exposed in public. It required a lot of training of both body and character.
The Ninja arts appeared to destroy an enemy almost as by magic. No sound, No smell, no fame, and no acknowledgment. They say that this is the art of Universe.