Question

what are the changes during puberty

Answer 1

Your hormones release more energy.
Your voice becomes bolder.
A white substance called sperm(I think u understand what I am trying to stay)
after hitting puberty u will feel pain in the lower back of your body
Lactic acid production also increased

Answer 2

Changes during puberty:
Hairs grown on different part of body .
Boys sound became hoarse .
Shoulder get broad.
Breast develops.
Taller in height.
Elongated of bones of different parts in body .