Why does a winning handball player need to develop both concentration and control?

A handball player needs concentration to pass the ball and see where to pass it to, you'll need control to pass where u want the ball to go.

well when looking at this if you think about it   negativley and positivley   react with each other and when the first layer gets full they add layers it starts with 2 on the first layer and it constantly goes on until the official number is there

one day because their over eating or whenever it kicks in their body