Kids are bigger, faster, and stronger. That comes from being more educated in nutrition, weigth training,and unfortunately supplements that many kids take.Others are very correct in that kids used to have to work,in hay fields and tobacco fields, the transition from those work fields to the practice field was a releif to them(me).When kids do nothing all day in the ac then go to practice they can't handle it.When kids had to work the oppurtunity to go play a sport was a gift or blessing.That is why alot of kids do not have the enthusiasm we used to have.