While considering the physical development of a youth one should remember that youth is the time of full blossom, the most delicate and important time in everyone's life. If the blossom is ruined the fruit is lost. Therefore youth is the golden opportunity. It is the time when a person is not yet set in his ideas, not addicted to certain habits, ready to accept new ideas. An intellectual youth generally seeks for new ideas. Youth is a time when one is most inclined to changes of every sort, and therefore youth is not fixed in particular habits.