And with equal suddenness, you know you are not going to make this shot. You are going to miss. This is not a choke job. It is a mild panic attack. Seasoned singers go through this when they are about to take the stage.
Many athletes suffer mild panic attacks when they are about to perform.
This is a real condition that affects many competitors. There is a distinct difference between choking and a mild panic attack. Or the anxiety one feels when they stand to lose everything on one shot. A panic attack occurs when one has a gut feeling about some form of anxiety. It is not clear cut, just a vague uneasy feeling.