Teen Development: Puberty Stages, Growth & Muscle Gain

Puberty involves five distinct stages that impact both physical growth and psychological wellness. Proper nutrition is essential for supporting growth spurts and helping teenage boys safely gain muscle.

Four girls (8-12) lying in circle on beach, holding hands, eyes closed

What Are the 4 Stages of Puberty?

Published Jun,13 2017 | By Dr. Tina M. St. John

Puberty is a sequential series of physical changes that lead to sexual maturity. These changes are described by Tanner stages, named after British pediatrician Dr. James Tanner. The stages are based on the development of secondary sex characteristics.