It's normal and you'll have them less and less as you get older. Guys will also notice the enlargement and low position of the testes and changes in the scrotum. Pubic hair emerges and the penis begins to enlarge in size shortly later. After peak body growth, facial and body hair emerges. Expect some odd squeaks in your voice as it begins to change and deepen at the peak of your growth spurt.
Growth spurts occur much later in puberty for boys than girls.
Many boys have uncomfortable pains in their arms and legs as the bones grow faster than the muscles can stretch to keep up with them. Girls can usually expect puberty to begin between the ages of 8 and 17, while boys undergo puberty from 10 to 18. But I am not developing like everyone else yet . It differs from person to person. In addition, you may find that you need more sleep than you used to.