<span>Lystra Gretter and a Committee for the Farrand Training School for Nurses</span>
There important because some diseases cant be seen unless they test blood or pee, that type of test can give 100% if your sick or have an infection, there impotant in order to see if your pee is normal or not .
True seems like the best answer. Players have trouble with the reverse swinging motion. The grip change of the racquet is more than likely the reason. There is more than one kind of backhand stroke.