Ketahui bahwa pubertas mengubah sudut pandangnya. Baca bahasa tubuhnya. Tunjukkan empati. Berikan simpati. Jadilah teman yang setia. Jangan tunduk pada tekanan rekan sebaya. Waspadai agresi.

I'm interested in that, but I only have a few mins. Can you give me at most the first 500 characters of a detailed explanation in English about that?
Boys normally go through puberty between the ages of 11 and 16.  It is during these years that they experience most of their physical changes (including growing taller and developing muscle).  During and after these years they’ll normally start to develop their sexuality.  They’ll start to look at themselves, and others, differently.  If you’re a girl who is a friend of a teenage boy, he might start to treat you differently.  On one hand because he’s experiencing changes in his emotions (and hor