The more relaxed the muscles are, the more energy can flow through the body. Using muscular tensions to try to ‘do’ the punch or attempting to use brute force to knock someone over will only work to opposite effect.

“The more relaxed the muscles are, the more energy can flow through the body. Using muscular tensions to try to ‘do’ the punch or attempting to use brute force to knock someone over will only work to opposite effect.”

Bruce Lee