puberty sexual education: Juvenility, or puberty, refers to a time when biological evolution is changing. Teenagers are at a point where they are questioning what is acceptable and what is happening to their bodies. They routinely compare their bodies to those of their friends, noticing differences in size while they wait in line or as they dress for the gym. These variations in expansion can occasionally cause issues for both parents and teenagers. These issues can include concerns about puberty, physical growth, self-esteem, and body image. Understanding common crises and issues related to physical development are important. Knowing them better will help you feel more at ease addressing issues and questions with them.