Do you know what a runner's high is ? Its the increased production and then release of a chemical called 'Dopamine' to the brain when you running or physically active. This chemical and what it does for your mind and soul is a beautiful occurrence. It can flood you brain with confidence, that can be applied to anything you do. This confidence can be especially valuable when you playing a tennis match. You should use it at all time with the purpose if breaking your opponents will.
If you run for every ball, your opponent can actually lose confidence in his or her ability to win, fearing that just one mistake on their part could lead to a switch in the match's momentum. They may be saying to them self, "Why won't this person(s) just give up, they are going to lose anyway."
Never ever repeat this sentence in your head. A momentum shift can happen to you or your opponent in a blink of an eye, if you run for every ball. No matter what the score is at that moment. If you lose momentum, you'll lose it fast and you won't get it back. It an age old tale in tennis. Your up 4-1 in a set, you lose it, and the match is quickly over 6-4, 6-1 and your left scratching your head. Never think about winning till the match is over, and the final point has been played.
Rick Macci, the pro seen here, was the one chosen by Richard Williams to polish up their games at his Florida academy, after he had taken them as far as he could. You'll see a lot of clips here with Rick in them making points about basic tennis fundamentals that I also use in my teaching. This one is a key point in all the coaching I do.
