like but knees hurt very much

Well, the best thing to do is to get yourself equipped with knee and shoulder pads. Volleyball is fun but it can cause some bruises. Always remember, safety first! ENJOY!

Back many years ago when I played in high school, we were required to wear Knee Pads. So were my daughters when they played. Do you have a pair? You definately should think about wearing them even when you are teaching or practicing. They aren't very expesive. I am not sure what kind of surface you are practicing on, but if it is a basketball court, that floor can and will do permanent damage to your knee caps if you land on them wrong!