Flat Out Like a Lizard Drinking on the Surface of Jupiter

Go read this - about why people choke.

http://online.wsj.com/article/SB10001424052702303960604575158122511930684.html

A sample:

Sian Beilock, a professor of psychology at the University of Chicago, has helped illuminate the cascade of mental events that lead professional athletes to fall apart on the fairway. She uses golf as her experimental paradigm. When people are learning how to putt, it can seem like a daunting activity: There's just so much to think about. Novice golfers need to hold the putter properly and keep their shoulders square. Then, they have to make sure that they hit the little white ball with a smooth stroke, making contact at the center of the putter head and letting the club move to the inside after impact. For an inexperienced player, a golf putt can seem like an endless checklist of do's and don'ts.

But the mental exertion pays off, at least at first. Ms. Beilock has shown that novices hit better putts when they consciously reflect on their actions. The more time they spend thinking about the putt, the more likely they are to avoid beginner's mistakes and sink the ball in the hole. A little experience, however, changes everything. After golfers have learned how to putt—once they have memorized the necessary movements—analyzing the stroke is a dangerous waste of time. Ms. Beilock has found, for instance, that when experienced golfers are forced to think about their putts, they hit significantly worse shots. All those conscious thoughts erase their years of practice; the grace of talent disappears. "We bring expert golfers into our lab, we tell them to pay attention to a particular part of their swing, and they just screw up," Ms. Beilock says. "When you are at a high level, your skills become somewhat automated. You don't need to pay attention to every step in what you're doing."

This is what happens when people "choke." Because the performers are nervous, they begin analyzing actions that are best performed on auto-pilot. When playing against Mr. Woods, for instance, golfers might start second guessing their drive, a skill they've honed through years of practice. Instead of elevating their game to compete with the superstar, his intimidating talent makes them think like a beginner. They regress before the crowd."