Tangential but a lot of sports drills are along these lines.
A great tennis drill is when your coach hits the ball to you and randomly yells "LEFT!" "RIGHT!" or "MIDDLE!" after you've begun your swing. Then you have to hit the ball in that direction. Helps hone your reaction time and helps you to have a "neutral" swing that doesn't telegraph your intentions to an opponent.
A great tennis drill is when your coach hits the ball to you and randomly yells "LEFT!" "RIGHT!" or "MIDDLE!" after you've begun your swing. Then you have to hit the ball in that direction. Helps hone your reaction time and helps you to have a "neutral" swing that doesn't telegraph your intentions to an opponent.
One can imagine variations in many sports.