when you practice you have to create something no body knows it because you did it inside your brain not your friends knows what you are doing but you practice in such way is 3 times more beneficial than just lifting the shuttle from one corner to the other corner and forget about all other corners thinking about just this corner lifting that is in a way wasting time because simply in the match i don't know where my opponent will be hitting to there fore i have to develop the ability to go ability to change my direction, ability to aware all my court