John, we all know that tension is limiting and therefore a bad thing in any fight!!! You know, can you actually throw that punch when you are tense? Nope. Tension holds you back. Relax and punch from your foot, with all your might and controlled focus- like a bolt of lightning is coming up through you from the ground.
Yogi was right!! And 'trust, but verify' is always good advice! My kids grew up with 'Quote your source!' to keep garbage out of the conversation and prevent made-up stuff inhabiting my house and car. They still use it today, which makes me feel that I got some things right along that long road.