Excerpted from Modified Wing Chun Kuen by John A. Douvillier
The Art of hitting requires correct muscular and skeletal alignment, and application of all your body parts, for delivery of the greatest possible impact onto the intended target. With proper training and practice you will gain the ability to punch very hard and heavy with each punch, with almost no effort, at any range, and without telecasting your intentions beforehand.
Correct straight line punching requires an earnest and systematic study of total body mechanics, leverage and timing. A straight line punch is characterized by moving your fist from point "A" to point "B" along a straight (linear) line. Circular punching, on the other hand, involves utilizing the shortened lever principal to decrease the radius of the circle as the punch completes its action, resulting in increased speed and impact power.
Impact punching, be it straight line or circular, must utilize total body torso power, and is a fine art that can literally take years of study and practice to completely master. It cannot be learned by chance. To illustrate: The observation of apes, monkeys, bears and many other animal species reveal a tendency to slap, cuff, claw, grapple and bite in combat. This display is usually accompanied by grossly inadequate balance, overexaggerated spasmodic movements and much noise in the form of screeching, screaming and yelling. Untrained human beings also exhibit quite similar behavior and mannerisms under these circumstances. By this example, it would appear that the ability to punch straight or jab is not an innate trait. The skilled fighter on the other hand does not exhibit such a display. To the contrary, the skilled fighter will be quite calm and relaxed, will use economical movements that appear effortless and smooth, will be graceful and fluid in his footwork, and will strike with the speed and power of a loaded gun. The skilled fighter will actually stalk his opponent in much the same manner as a tiger stalks its prey, waiting for just the right moment to pounce upon it and deal the deadly blow. Read More